0000950170-21-003110 | 10-Q | XBRL Viewer

Commitments and Contingencies - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2019
Lessee Lease Description [Line Items]
Lessee, operating lease, existence of option to terminate			true
Operating lease, option to terminate, description			an option to terminate the lease early within three years of lease termination
Sublease Income	$ 0	$ 0	$ 2,200	$ 2,100
CALIFORNIA [Member]
Lessee Lease Description [Line Items]
Letters of Credit Outstanding, Amount					$ 8,200
Maximum [Member]
Lessee Lease Description [Line Items]
Operating lease, renewal term	3 years		3 years

Balance Sheet Components - Summary of Accrued Expense and Other Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Payables And Accruals [Abstract]
Accrued compensation and benefits	$ 14,211	$ 4,240
Accrued expenses	13,119	7,225
Employee Contributions Under Employee Stock Purchase Plan	9,882	0
Accrued commissions	9,486	10,189
Accrued payroll taxes	8,052	6,756
Other liabilities	11,971	5,301
Total accrued expenses and other liabilities	$ 66,721	$ 33,711

Stockholders' Equity (Deficit) - Schedule of Weighted-Average Assumptions to Estimate Fair Value of Employee Stock Purchase Rights (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Class Of Stock [Line Items]
Expected term (in years)	6 years 29 days	6 years 25 days	6 years 2 months 1 day	6 years 1 month 20 days
Risk-free interest rate	0.90%	0.30%	1.10%	0.40%
Expected dividend yield	0.00%	0.00%	0.00%	0.00%
2021 Employee Stock Purchase Plan [Member]
Class Of Stock [Line Items]
Expected volatility, minimum	54.60%
Expected volatility, maximum	56.70%
Risk-free interest rate	0.10%
Expected dividend yield	0.00%
2021 Employee Stock Purchase Plan [Member] \| Maximum [Member]
Class Of Stock [Line Items]
Expected term (in years)	1 year 1 month 13 days
2021 Employee Stock Purchase Plan [Member] \| Minimum [Member]
Class Of Stock [Line Items]
Expected term (in years)	7 months 17 days

Marketable Securities - Additional Information (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Available-for-sale securities, continuous unrealized loss position, fair value	$ 329,700	$ 91,500
Available-for-sale securities, continuous unrealized loss position, twelve months or longer, fair value	$ 0	$ 0

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 582,697	$ 36,789
Marketable securities	448,245	251,756
Accounts receivable, net of allowance	116,006	105,971
Deferred contract acquisition costs	23,120	14,403
Prepaid expenses and other current assets	37,481	18,775
Total current assets	1,207,549	427,694
Property and equipment, net	11,892	6,718
Operating lease right-of-use assets	39,705	48,273
Deferred contract acquisition costs, non-current	43,748	33,196
Other assets, non-current	6,926	10,238
Total assets	1,309,820	526,119
Current liabilities:
Accounts payable	3,327	1,646
Accrued expenses and other liabilities	66,721	33,711
Operating lease liabilities	9,819	10,492
Deferred revenue	179,696	142,901
Liability for early exercise of unvested stock options	13,238	5,049
Total current liabilities	272,801	193,799
Operating lease liabilities, non-current	33,720	40,440
Deferred revenue, non-current	22,398	16,292
Other liabilities, non-current	9,760	7,203
Total liabilities	338,679	257,734
Redeemable convertible preferred stock, par value $0.00001 per share; 0 and 115,277,850 shares authorized as of September 30, 2021 and December 31, 2020, respectively; 0 and 115,277,850 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively; aggregate liquidation preference of $0 and $575,085 as of September 30, 2021 and December 31, 2020, respectively	0	574,634
Stockholders’ deficit:
Preferred stock, par value of $0.00001 per share; 10,000,000 and 0 shares authorized as of September 30, 2021 and December 31, 2020, respectively; 0 shares issued and outstanding as of September 30, 2021 and December 31, 2020	0	0
Common Stock, Value	0	1
Additional paid-in capital	1,605,341	99,575
Accumulated other comprehensive income	212	228
Accumulated deficit	(634,415)	(406,053)
Total stockholders’ equity (deficit)	971,141	(306,249)
Total liabilities, redeemable convertible preferred stock, and stockholders’ equity (deficit)	1,309,820	526,119
Convertible Founder Stock [Member]
Stockholders’ deficit:
Convertible Founder Stock, Value	0	0
Class A Common Stock [Member]
Stockholders’ deficit:
Common Stock, Value	1	0
Total stockholders’ equity (deficit)	1
Class B Common Stock [Member]
Stockholders’ deficit:
Common Stock, Value	2	0
Total stockholders’ equity (deficit)	$ 2	$ 1

Stockholders' Equity (Deficit)

9 Months Ended

Sep. 30, 2021

Stockholders' Equity Note [Abstract]

Stockholders' Equity (Deficit)

9. Stockholders’ Equity (Deficit)

Preferred Stock

In connection with the IPO, the Company’s amended and restated certificate of incorporation became effective, which authorized the issuance of 10,000,000 shares of undesignated preferred stock with a par value of $0.00001 per share with rights and preferences, including voting rights, designated from time to time by the board of directors.

Common Stock

The Company has two classes of common stock: Class A common stock and Class B common stock. In connection with the IPO, the Company’s amended and restated certificate of incorporation authorized the issuance of 1,000,000,000 shares of Class A common stock and 500,000,000 shares of Class B common stock. The shares of Class A common stock and Class B common stock are identical, except with respect to voting, converting, and transfer rights. Each share of Class A common stock is entitled to one vote. Each share of Class B common stock is entitled to ten votes. Class A and Class B common stock have a par value of $0.00001 per share and are referred to as common stock throughout the notes to the condensed consolidated financial statements, unless otherwise noted. Holders of common stock are entitled to receive any dividends as may be declared from time to time by the board of directors.

Each share of Class B common stock is convertible at any time at the option of the holder into one share of Class A common stock. Any holder’s shares of Class B common stock will convert automatically to Class A common stock, on a one-to-one basis, upon the following: (i) sale or transfer of such share of Class B common stock, except for permitted transfers as described in the amended and restated certificate of incorporation; (ii) the death or incapacity of the Class B common stockholder (or nine months after the date of the death or incapacity if the stockholder is one of the Company’s founders); and (iii) on the final conversion date, defined as the earliest of (a) the date fixed by our board of directors that is no less than 61 days and no more than 180 days following the date on which the outstanding shares of Class B common stock represent less than 10% of the then outstanding shares of Class A and Class B common stock; (b) the last trading day of the fiscal year following the tenth anniversary of the Company’s IPO; or (c) the date specified by a vote of the holders of a majority of the outstanding shares of Class B common stock, voting as a single class.

Immediately prior to the closing of the IPO, all shares of the Company’s convertible founder stock outstanding, totaling 635,818, were automatically converted into an equal number of shares of Class B common stock. As of September 30, 2021, there were no shares of convertible founder stock issued and outstanding.

In June 2021, the Company donated 250,000 shares of its Class A common stock to its charitable foundation, Confluent.org. The Company recognized charitable donation expense of $13.3 million to general and administrative expense based on the closing price of its Class A common stock on the date of donation.

Common Stock Reserved for Future Issuance

The Company has reserved the following shares of common stock for future issuance:


	September 30, 2021		December 31, 2020
Redeemable convertible preferred stock		-		115,277,850
Convertible founder stock		-		635,818
2014 Stock Plan:
Options outstanding		70,012,510		71,213,150
Restricted stock units outstanding		3,943,814		-
Remaining shares available for future issuance under the 2014 Plan		-		4,722,481
2021 Equity Incentive Plan:
Options outstanding		22,500		-
Restricted stock units outstanding		2,053,730		-
Remaining shares available for future issuance under the 2021 Plan		32,527,371		-
2021 Employee Stock Purchase Plan		5,162,575		-
Total		113,722,500		191,849,299

Equity Incentive Plans

In September 2014, the Company’s board of directors adopted and the Company’s stockholders approved the 2014 Stock Plan (the “2014 Plan”). The 2014 Plan was also amended and restated in March 2021 and June 2021. Under the 2014 Plan, the board of directors may grant stock options and other equity-based awards to eligible employees, directors, and consultants. The 2014 Plan was terminated in June 2021 in connection with the IPO, but continues to govern the terms of outstanding awards that were granted prior to the termination of the 2014 Plan. No further equity awards will be granted under the 2014 Plan. With the establishment of the 2021 Equity Incentive Plan (the “2021 Plan”), upon the expiration, forfeiture, cancellation, or reacquisition of any shares of Class B common stock underlying outstanding stock-based awards granted under the 2014 Plan, an equal number of shares of Class A common stock will become available for grant under the 2021 Plan.

In April 2021, the Company’s board of directors adopted, and in June 2021, its stockholders approved, the 2021 Plan, which became effective at the time of the execution of the underwriting agreement related to the Company’s IPO. The 2021 Plan provides for the grant of incentive stock options, nonqualified stock options, stock appreciation rights, restricted stock awards, restricted stock units (“RSUs”) awards, performance awards, and other forms of awards to employees, directors, and consultants, including employees and consultants of the Company’s affiliates. A total of 25,812,876 shares of the Company’s Class A common stock have been reserved for future issuance under the 2021 Plan in addition to (i) the shares that remained available for grant of future awards under the 2014 Plan at the time the 2021 Plan became effective, (ii) shares underlying outstanding stock awards granted under the 2014 Plan that expire, or are forfeited, cancelled, or reacquired, as described above, and (iii) any automatic increases in the number of shares of Class A common stock reserved for future issuance under this plan.

In April 2021, the Company’s board of directors adopted, and in June 2021, its stockholders approved, the 2021 Employee Stock Purchase Plan (the “2021 ESPP”), which became effective at the time of the execution of the underwriting agreement related to the Company’s planned initial public offering. The 2021 ESPP authorizes the issuance of shares of Class A common stock pursuant to purchase rights granted to employees. A total of 5,162,575 shares of the Company’s Class A common stock have been reserved for future issuance under the 2021 ESPP, in addition to any automatic increases in the number of shares of Class A common stock reserved for future issuance under this plan.

Except for the initial offering period, the 2021 ESPP provides for 12-month offering periods beginning February 16 and August 16 of each year, and each offering period will consist of two six-month purchase periods. The initial offering period began on June 24, 2021 and will end on August 15, 2022. The initial offering consists of two purchase periods, with the first purchase period ending on February 15, 2022 and the second purchase period ending on August 15, 2022. The price at which Class A common stock is purchased under the 2021 ESPP is equal to 85% of the lesser of (1) the fair market value of the Company’s stock on the offering date or (2) the fair market value of the Company’s stock on the purchase date.

Equity Awards Outstanding

The following table summarizes stock equity award activity and activity regarding shares available for grant under the 2014 Plan and the 2021 Plan:


				Equity Awards Outstanding
	Shares Available for Grant			Outstanding Stock Options			Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Balance as of January 1, 2021		4,722,481			71,213,150		$	3.39		8.26	$	677,503
Increase in authorized shares		16,000,000			-		$	-
Stock options granted		(13,603,242	)		13,603,242		$	15.18
Stock options exercised		-			(4,042,079	)	$	3.38
Stock options forfeited		1,149,971			(1,149,971	)	$	3.34
Repurchases of unvested common stock		38,400			-		$	-
RSUs granted		(14,000	)		-		$	-
Balance as of March 31, 2021		8,293,610			79,624,342		$	5.40		8.35	$	1,158,361
Increase in authorized shares		32,412,876			-		$	-
Stock options granted		(3,586,053	)		3,586,053		$	20.69
Stock options exercised		-			(7,284,453	)	$	3.33
Stock options forfeited		602,577			(602,577	)	$	4.97
Repurchases of unvested common stock		78,687			-		$	-
RSUs granted		(4,070,219	)		-		$	-
RSUs forfeited		18,936			-		$	-
Balance as of June 30, 2021		33,750,414			75,323,365		$	6.33		8.18	$	3,101,256
Stock options granted		(22,500	)		22,500		$	56.14
Stock options exercised		-			(4,523,689	)	$	2.24
Stock options forfeited		787,166			(787,166	)	$	6.13


Repurchases of unvested common stock	40,712		-	$	-
RSUs granted	(2,067,031	)	-	$	-
RSUs forfeited	38,610		-	$	-
Balance as of September 30, 2021	32,527,371		70,035,010	$	6.61	8.00	$	3,714,731
Vested as of September 30, 2021			24,435,415	$	2.90	6.83	$	1,386,694
Vested and expected to vest as of September 30, 2021			70,035,010	$	6.61	8.00	$	3,714,731

Aggregate intrinsic value represents the difference between the exercise price of the options to purchase common stock and the estimated fair value of the Company’s common stock. The intrinsic value of options exercised was $433.4 million and $45.0 million for the nine months ended September 30, 2021 and 2020, respectively. The weighted-average grant-date fair value per share of options granted during the nine months ended September 30, 2021 and 2020 was $12.43 and $3.58, respectively.

Early Exercised Options

All stock option holders have the right to exercise unvested options, which are subject to a repurchase right held by the Company at the original exercise price in the event of voluntary or involuntary termination of employment of the stockholder. As of September 30, 2021 and December 31, 2020, there were 2,831,202 and 2,338,945 shares that had been early exercised and were subject to repurchase, respectively. The proceeds related to early exercised options are recorded as liabilities until the options vest, at which point they are reclassified to equity. As of September 30, 2021 and December 31, 2020, the liabilities for early exercised options subject to repurchase were $18.8 million and $6.9 million, respectively, which were recorded as liability for early exercise of unvested stock options and other liabilities, non-current on the condensed consolidated balance sheets.

Shares issued for early exercised options are included in issued and outstanding shares as they are legally issued and outstanding, but are not deemed outstanding for accounting purposes until the shares vest.

Performance-Based Options

As of September 30, 2021 and December 31, 2020, the Company had granted 2,875,255 options with both a service-based vesting condition and a performance-based vesting condition. The performance-based vesting condition was not deemed probable until consummated, and therefore, stock-based compensation related to these options remained unrecognized prior to the effectiveness of the IPO. Upon the effectiveness of the IPO, the performance-based vesting condition was satisfied, and therefore, the Company recognized cumulative stock-based compensation expense of $3.8 million to general and administrative expense using the accelerated attribution method for the portion of the awards for which the service-based vesting condition has been fully or partially satisfied.

RSUs

During the nine months ended September 30, 2021, the Company began granting RSUs to its employees. RSUs granted prior to the IPO had both service-based and performance-based vesting conditions. The service-based vesting condition for these awards is generally satisfied by rendering continuous service for four years, during which time the grants will vest either quarterly or with a cliff vesting period of one year and continued vesting quarterly thereafter. The performance-based vesting condition is satisfied upon the sale of the Company’s common stock in a firm commitment underwritten public offering. The performance-based vesting condition was not deemed probable until consummated, and therefore, stock-based compensation related to these RSUs remained unrecognized prior to the effectiveness of the IPO. Upon the effectiveness of the IPO, the performance-based vesting condition was satisfied, and therefore, the Company recognized cumulative stock-based compensation expense of $6.8 million using the

accelerated attribution method for the portion of the awards for which the service-based vesting condition has been fully or partially satisfied.

The following table summarizes RSU activity under the 2014 Plan and the 2021 Plan:


	RSUs Outstanding
	Number of Shares			Weighted-Average Grant Date Fair Value
Unvested balances as of January 1, 2021		-		$	-
RSUs granted		14,000		$	19.36
RSUs vested		-		$	-
RSUs forfeited		-		$	-
Unvested balances as of March 31, 2021		14,000		$	19.36
RSUs granted		4,070,219		$	28.90
RSUs vested		(15,250	)	$	19.94
RSUs forfeited		(18,936	)	$	21.76
Unvested balances as of June 30, 2021		4,050,033		$	28.93
RSUs granted		2,067,031		$	56.14
RSUs vested		(80,910	)	$	29.46
RSUs forfeited		(38,610	)	$	38.65
Unvested balances as of September 30, 2021		5,997,544		$	38.24

Determination of Fair Value

The Company estimates the fair value of stock options using the Black-Scholes option-pricing model, which is dependent upon several variables, such as the fair value of the Company’s common stock, the expected option term, expected volatility of the Company’s stock price over the expected term, expected risk-free interest rate over the expected option term, and expected dividend yield.

Fair Value of Common Stock: Prior to the completion of the IPO, the board of directors had determined the fair value of common stock by considering a number of objective and subjective factors, including but not limited to contemporaneous independent third-party valuations of the Company’s common stock, market performance of comparable publicly traded companies, sales of the Company’s redeemable convertible preferred stock and common stock to unrelated third parties, operating and financial performance, the lack of marketability of the Company’s common stock, general and industry-specific economic outlook, and the likelihood of achieving a liquidity event, such as an initial public offering, a merger, or acquisition of the Company given prevailing market conditions. After the completion of the IPO, the fair value of the Company’s common stock is determined by the closing price, on the date of grant, of its common stock, which is traded on the Nasdaq Global Select Market.

Expected Term: For option grants subject to service-based vesting conditions only, the expected term represents the period that the Company’s stock options are expected to be outstanding and is calculated using the simplified method for options that have only service-based vesting conditions. The simplified method deems the term to be the average of the time-to-vesting and the contractual life of the options. For other option grants, the Company estimates the expected term using historical data on employee exercises and post-vesting employment termination behavior, considering the contractual life of the award.

Expected Volatility: Since the Company does not have a sufficient trading history of its common stock, the expected volatility was derived from the average historical stock volatilities of public companies within the Company’s industry that it considers to be comparable to its business, over a period equivalent to the expected term of the stock options.

Risk-Free Interest Rate: The Company bases the risk-free interest rate on the implied yield available on U.S. Treasury zero-coupon notes with maturities equivalent to the option’s expected term.

Expected Dividend Yield: The Company has not issued any dividends in its history and does not expect to issue dividends over the life of the options and therefore has estimated the dividend yield to be zero.

The fair value of stock options granted was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:


	Three Months Ended September 30,						Nine Months Ended September 30,
	2021			2020			2021			2020
Expected term (in years)		6.08			6.07			6.17			6.14
Expected volatility		60.4	%		70.0	%		66.3	%		69.4	%
Risk-free interest rate		0.9	%		0.3	%		1.1	%		0.4	%
Expected dividend yield		0	%		0	%		0	%		0	%

The fair value of employee stock purchase rights for the initial offering period under the 2021 ESPP was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:


	Three Months Ended September 30, 2021
Expected term (in years)	0.63 - 1.12
Expected volatility	54.6% - 56.7%
Risk-free interest rate	0.1%
Expected dividend yield	0%

Stock-Based Compensation Expense

Total stock-based compensation expense was as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Cost of revenue - subscription	$	3,945	$	883	$	7,092	$	1,869
Cost of revenue - services		1,790		671		3,389		1,333
Research and development		16,310		26,522		28,753		30,818
Sales and marketing		18,516		6,379		34,647		11,487
General and administrative		9,122		85,619		23,671		88,090
Stock-based compensation, net of amounts capitalized	$	49,683	$	120,074	$	97,552	$	133,597
Capitalized stock-based compensation		693		148		1,187		447
Total stock-based compensation	$	50,376	$	120,222	$	98,739	$	134,044

As of September 30, 2021, there was $497.2 million of unrecognized stock-based compensation expense, which is expected to be recognized over a weighted-average period of 3.3 years.

Tender Offer

In July 2020, the Company facilitated a tender offer whereby certain investors purchased shares of the Company’s convertible founder stock and common stock from certain stockholders. As a result, certain directors, employees, and non-employees of the Company sold an aggregate of 7,284,182 shares of the Company’s convertible founder stock and 1,883,233 shares of the Company’s common stock to entities affiliated with new and existing investors at a purchase price of $14.9687 per share for an aggregate purchase price of $137.2 million. Upon the sale of the Company’s stock, 7,284,182 shares of convertible founder stock were converted into shares of Series E redeemable convertible preferred stock. The purchase price in this tender offer transaction was in excess of the fair value of such shares at the time of the transaction. As a result, during the three months ended September 30, 2020, the Company recorded the excess of the purchase price over fair value of $76.3 million as stock-based compensation expense.

Secondary Sales

In September 2020, a director of the Company sold an aggregate of 2,632,747 shares of the Company’s common stock to entities affiliated with an existing investor at a purchase price of $14.9687 per share for an aggregate purchase price of $39.4 million. Also in September 2020, a director and an employee of the Company sold an aggregate of 2,142,900 shares of the Company’s common stock to entities affiliated with a new investor at a purchase price of $14.00 per share for an aggregate purchase price of $30.0 million. The purchase prices in both of these secondary transactions were in excess of the fair value of such shares. As a result, during the three months ended September 30, 2020, the Company recorded the excess of the purchase price over fair value of $35.6 million as stock-based compensation expense.

Label	Element	Value
Restricted Cash	us-gaap_RestrictedCash	$ 750,000
Restricted Cash	us-gaap_RestrictedCash	$ 1,017,000

Revenue - Additional Information (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Disaggregation Of Revenue [Line Items]
Revenue, remaining performance obligation, amount	$ 385.0
Revenue, remaining performance obligation, percentage	67.00%
Deferred revenue	$ 202.1		$ 159.2
Revenue recognized from deferred revenue	118.4	$ 73.4
Allowance for doubtful accounts	0.0		0.0
Unbilled receivables balance	$ 26.6		$ 17.6

Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Tax Disclosure [Abstract]
Provision for (benefit from) income taxes	$ 684	$ (750)	$ 2,744	$ (468)
Unrecognized tax benefits	$ 4,600		4,600
Interest and penalties			$ 0

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References + Details

Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	2. Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in the Company’s final prospectus dated June 23, 2021 and filed with the SEC pursuant to Rule 424(b)(4) on June 25, 2021 (“Final Prospectus”). In management’s opinion, the unaudited condensed consolidated financial statements have been prepared on a basis consistent with the annual consolidated financial statements and reflect all adjustments, which include only normal recurring adjustments, necessary for the fair statement of the Company’s financial position as of September 30, 2021 and the results of operations and cash flows for the three and nine months ended September 30, 2021 and 2020. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the full year or any other future interim or annual period. The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation. Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Such estimates include, but are not limited to, the standalone selling price for each distinct performance obligation included in customer contracts, deferred contract acquisition costs and their period of benefit, valuation of stock-based awards, the fair value of the Company’s common stock prior to its IPO in June 2021, capitalization and estimated useful life of internal-use software, the incremental borrowing rate used to measure operating lease liabilities, and accounting for income taxes. The Company bases its estimates on historical and anticipated results, trends, and various other assumptions that it believes are reasonable under the circumstances. Estimates and assumptions about future events and their effects, including the impact of the COVID-19 pandemic, cannot be determined with certainty and therefore require the exercise of judgment. Actual results could differ from those estimates and any such differences may be material to the Company’s condensed consolidated financial statements. Significant Accounting Policies There have been no significant changes to the Company’s significant accounting policies disclosed in “Note 2 – Basis of Presentation and Summary of Significant Accounting Policies” of the Company’s Final Prospectus. Recent Accounting Pronouncements Recently Adopted Accounting Pronouncements Convertible Instruments: In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity. ASU 2020-06 reduces the number of accounting models for convertible debt instruments and convertible preferred stock, and enhances information transparency by making targeted improvements to the disclosures for convertible instruments and earnings per share guidance. The Company adopted this guidance as of January 1, 2021, and the adoption did not have a material impact on its condensed consolidated financial statements. Recent Accounting Pronouncements Not Yet Adopted Credit Losses: In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Statements, which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost, which includes the Company’s accounts receivable, certain financial instruments, and contract assets. ASU 2016-13 replaces the existing incurred loss impairment model with an expected loss methodology. Subsequently, the FASB issued multiple codification improvement amendments to ASU 2016-13. ASU 2016-13 and the applicable subsequent amendments are effective for the Company for the year beginning January 1, 2023, though early adoption is permitted. The Company is currently evaluating the potential impact of this guidance on its consolidated financial statements.

Condensed Consolidated Statements of Redeemable Convertible Preferred Stock and Stockholders' Equity (Deficit) (Unaudited) - USD ($) $ in Thousands	Total	Redeemable Convertible Preferred Stock [Member]	Convertible Founder Stock [Member]	Common Class A [Member]	Common Class B [Member]	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Deficit [Member]
Balance at Dec. 31, 2019	$ (130,765)					$ 1	$ 45,262	$ 197	$ (176,225)
Balance (shares) at Dec. 31, 2019		90,624,091
Balance at Dec. 31, 2019		$ 205,784
Balance (shares) at Dec. 31, 2019			7,920,000			98,636,479
Issuance of Series E redeemable convertible preferred stock, net of issuance costs		$ 259,865
Issuance of Series E redeemable convertible preferred stock, net of issuance costs (shares)		17,369,577
Issuance of common stock upon early exercise of unvested options, net of repurchases						1,089,862
Vesting of early exercised options	4,317						4,317
Issuance of common stock upon exercise of vested options	7,000						7,000
Issuance of common stock upon exercise of vested options (shares)						6,717,498
Stock-based compensation	134,044						134,044
Conversion of convertible founder stock for Series E redeemable convertible preferred stock (shares)		7,284,182	(7,284,182)
Conversion of convertible founder stock for Series E redeemable convertible preferred stock	(109,035)	$ 109,035					(109,035)
Other comprehensive income (loss)	513							513
Net loss	(198,072)			$ 0	$ (198,072)				(198,072)
Balance at Sep. 30, 2020	(291,998)					$ 1	81,588	710	(374,297)
Balance (shares) at Sep. 30, 2020		115,277,850
Balance at Sep. 30, 2020		$ 574,684
Balance (shares) at Sep. 30, 2020			635,818			106,443,839
Balance at Jun. 30, 2020	(170,533)					$ 1	64,423	1,199	(236,156)
Balance (shares) at Jun. 30, 2020		107,325,608
Balance at Jun. 30, 2020		$ 455,649
Balance (shares) at Jun. 30, 2020			7,920,000			101,679,224
Issuance of Series E redeemable convertible preferred stock, net of issuance costs		$ 10,000
Issuance of Series E redeemable convertible preferred stock, net of issuance costs (shares)		668,060
Issuance of common stock upon early exercise of unvested options, net of repurchases						673,770
Vesting of early exercised options	1,565						1,565
Issuance of common stock upon exercise of vested options	4,413						4,413
Issuance of common stock upon exercise of vested options (shares)						4,090,845
Stock-based compensation	120,222						120,222
Conversion of convertible founder stock for Series E redeemable convertible preferred stock (shares)		7,284,182	(7,284,182)
Conversion of convertible founder stock for Series E redeemable convertible preferred stock	(109,035)	$ 109,035					(109,035)
Other comprehensive income (loss)	(489)							(489)
Net loss	(138,141)			$ 0	(138,141)				(138,141)
Balance at Sep. 30, 2020	(291,998)					$ 1	81,588	710	(374,297)
Balance (shares) at Sep. 30, 2020		115,277,850
Balance at Sep. 30, 2020		$ 574,684
Balance (shares) at Sep. 30, 2020			635,818			106,443,839
Balance at Dec. 31, 2020	$ (306,249)				$ 1		99,575	228	(406,053)
Balance (shares) at Dec. 31, 2020	115,277,850	115,277,850
Balance at Dec. 31, 2020	$ 574,634	$ 574,634
Balance (shares) at Dec. 31, 2020			635,818		109,447,843
Conversion of redeemable convertible preferred and founder stock to common stock upon initial public offering		$ (574,634)
Conversion of convertible stock to common stock (shares) common stock upon initial public offering (shares)		(115,277,850)
Conversion of redeemable convertible preferred and founder stock to common stock upon initial public offering	574,634				$ 1		574,633
Conversion of convertible stock to common stock (shares) common stock upon initial public offering (shares)			(635,818)		115,913,668
Issuance of common stock upon initial public offering, net of underwriting discounts and commissions and other issuance cost	783,158						783,158
Issuance of common stock upon initial public offering, net of underwriting discounts and commissions and other issuance cost (shares)				23,000,000
Issuance of common stock pursuant to charitable donation	13,290						13,290
Issuance of common stock pursuant to charitable donation (shares)				250,000
Issuance of common stock upon early exercise of unvested options, net of repurchases					2,434,554
Vesting of early exercised options	6,874						6,874
Issuance of common stock upon exercise of vested options	29,073			$ 1			29,072
Issuance of common stock upon exercise of vested options (shares)				5,144,713	8,113,155
Vesting of restricted stock (shares)					96,160
Conversion of class B common stock to class A common stock (shares)				33,075,263	(33,075,263)
Stock-based compensation	98,739						98,739
Conversion of convertible founder stock for Series E redeemable convertible preferred stock	0
Other comprehensive income (loss)	(16)							(16)
Net loss	(228,362)			$ (19,748)	$ (208,614)				(228,362)
Balance at Sep. 30, 2021	$ 971,141			$ 1	$ 2		1,605,341	212	(634,415)
Balance (shares) at Sep. 30, 2021	0
Balance at Sep. 30, 2021	$ 0
Balance (shares) at Sep. 30, 2021				61,469,976	202,930,117
Balance at Jun. 30, 2021	1,003,545				$ 2		1,542,338	(46)	(538,749)
Balance (shares) at Jun. 30, 2021				27,534,808	232,301,398
Issuance of common stock upon early exercise of unvested options, net of repurchases					(17,146)
Vesting of early exercised options	2,692						2,692
Issuance of common stock upon exercise of vested options	$ 9,936			$ 1			9,935
Issuance of common stock upon exercise of vested options (shares)	4,523,689			3,638,876	861,247
Vesting of restricted stock (shares)					80,910
Conversion of class B common stock to class A common stock (shares)				30,296,292	(30,296,292)
Stock-based compensation	$ 50,376						50,376
Other comprehensive income (loss)	258							258
Net loss	(95,666)			$ (15,033)	$ (80,633)				(95,666)
Balance at Sep. 30, 2021	$ 971,141			$ 1	$ 2		$ 1,605,341	$ 212	$ (634,415)
Balance (shares) at Sep. 30, 2021	0
Balance at Sep. 30, 2021	$ 0
Balance (shares) at Sep. 30, 2021				61,469,976	202,930,117

Marketable Securities - Schedule of Fair Value of Contractual Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Investments Debt And Equity Securities [Abstract]
Due within one year	$ 283,418	$ 180,320
Due after one year through five years	164,830	71,104
Amortized Cost	448,248	251,424
Due within one year, fair value	283,452	180,520
Due after one year through five years, fair value	164,793	71,236
Fair Value	$ 448,245	$ 251,756

Revenue - Schedule of Activity of Deferred Contract Acquisition Costs (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Revenue From Contract With Customer [Abstract]
Beginning balance	$ 47,599	$ 25,499
Capitalization of contract acquisition costs	37,591	23,475
Amortization of deferred contract acquisition costs	(18,322)	(10,253)
Ending balance	$ 66,868	$ 38,721

Marketable Securities

9 Months Ended

Sep. 30, 2021

Investments Debt And Equity Securities [Abstract]

Marketable Securities

3. Marketable Securities

The following tables summarize the fair values of the Company’s marketable securities (in thousands):


	September 30, 2021
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
U.S. treasury securities	$	291,232	$	1	$	(37	)	$	291,196
Corporate notes and bonds		102,137		57		(26	)		102,168
Commercial paper		35,836		6		-			35,842
U.S. agency obligations		15,998		-		(5	)		15,993
Municipal bonds		3,045		1		-			3,046
Total marketable securities	$	448,248	$	65	$	(68	)	$	448,245


	December 31, 2020
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Corporate notes and bonds	$	155,401	$	360	$	(21	)	$	155,740
Commercial paper		63,503		27		(24	)		63,506
U.S. agency obligations		32,520		-		(10	)		32,510
Total marketable securities	$	251,424	$	387	$	(55	)	$	251,756

Realized gains and losses were not material for the three and nine months ended September 30, 2021 and 2020. Marketable securities in an unrealized loss position had a fair value of $329.7 million and an immaterial amount of unrealized losses as of September 30, 2021, and a fair value of $91.5 million and an immaterial amount of unrealized losses as of December 31, 2020. No marketable securities were in a continuous unrealized loss position for more than twelve months as of September 30, 2021 and December 31, 2020.

The following table summarizes the contractual maturities of the Company’s marketable securities (in thousands):


	September 30, 2021				December 31, 2020
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due within one year	$	283,418	$	283,452	$	180,320	$	180,520
Due after one year through five years		164,830		164,793		71,104		71,236
Total	$	448,248	$	448,245	$	251,424	$	251,756

Stockholders' Equity (Deficit) (Tables)

9 Months Ended

Sep. 30, 2021

Stockholders' Equity Note [Abstract]

Common Stock Reserved for Future Issuance

The Company has reserved the following shares of common stock for future issuance:


	September 30, 2021		December 31, 2020
Redeemable convertible preferred stock		-		115,277,850
Convertible founder stock		-		635,818
2014 Stock Plan:
Options outstanding		70,012,510		71,213,150
Restricted stock units outstanding		3,943,814		-
Remaining shares available for future issuance under the 2014 Plan		-		4,722,481
2021 Equity Incentive Plan:
Options outstanding		22,500		-
Restricted stock units outstanding		2,053,730		-
Remaining shares available for future issuance under the 2021 Plan		32,527,371		-
2021 Employee Stock Purchase Plan		5,162,575		-
Total		113,722,500		191,849,299

Summary of Stock Equity Award Activity

The following table summarizes stock equity award activity and activity regarding shares available for grant under the 2014 Plan and the 2021 Plan:


				Equity Awards Outstanding
	Shares Available for Grant			Outstanding Stock Options			Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (in years)		Aggregate Intrinsic Value (in thousands)
Balance as of January 1, 2021		4,722,481			71,213,150		$	3.39		8.26	$	677,503
Increase in authorized shares		16,000,000			-		$	-
Stock options granted		(13,603,242	)		13,603,242		$	15.18
Stock options exercised		-			(4,042,079	)	$	3.38
Stock options forfeited		1,149,971			(1,149,971	)	$	3.34
Repurchases of unvested common stock		38,400			-		$	-
RSUs granted		(14,000	)		-		$	-
Balance as of March 31, 2021		8,293,610			79,624,342		$	5.40		8.35	$	1,158,361
Increase in authorized shares		32,412,876			-		$	-
Stock options granted		(3,586,053	)		3,586,053		$	20.69
Stock options exercised		-			(7,284,453	)	$	3.33
Stock options forfeited		602,577			(602,577	)	$	4.97
Repurchases of unvested common stock		78,687			-		$	-
RSUs granted		(4,070,219	)		-		$	-
RSUs forfeited		18,936			-		$	-
Balance as of June 30, 2021		33,750,414			75,323,365		$	6.33		8.18	$	3,101,256
Stock options granted		(22,500	)		22,500		$	56.14
Stock options exercised		-			(4,523,689	)	$	2.24
Stock options forfeited		787,166			(787,166	)	$	6.13


Repurchases of unvested common stock	40,712		-	$	-
RSUs granted	(2,067,031	)	-	$	-
RSUs forfeited	38,610		-	$	-
Balance as of September 30, 2021	32,527,371		70,035,010	$	6.61	8.00	$	3,714,731
Vested as of September 30, 2021			24,435,415	$	2.90	6.83	$	1,386,694
Vested and expected to vest as of September 30, 2021			70,035,010	$	6.61	8.00	$	3,714,731

Schedule of Weighted-Average Assumptions to Estimate Fair Value of Stock Options

The fair value of stock options granted was estimated on the date of grant using the Black-Scholes option-pricing model with the following weighted-average assumptions:


	Three Months Ended September 30,						Nine Months Ended September 30,
	2021			2020			2021			2020
Expected term (in years)		6.08			6.07			6.17			6.14
Expected volatility		60.4	%		70.0	%		66.3	%		69.4	%
Risk-free interest rate		0.9	%		0.3	%		1.1	%		0.4	%
Expected dividend yield		0	%		0	%		0	%		0	%

Schedule of Weighted-Average Assumptions to Estimate Fair Value of Employee Stock Purchase Rights


	Three Months Ended September 30, 2021
Expected term (in years)	0.63 - 1.12
Expected volatility	54.6% - 56.7%
Risk-free interest rate	0.1%
Expected dividend yield	0%

Summary of Stock-Based Compensation Expense

Total stock-based compensation expense was as follows (in thousands):


	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Cost of revenue - subscription	$	3,945	$	883	$	7,092	$	1,869
Cost of revenue - services		1,790		671		3,389		1,333
Research and development		16,310		26,522		28,753		30,818
Sales and marketing		18,516		6,379		34,647		11,487
General and administrative		9,122		85,619		23,671		88,090
Stock-based compensation, net of amounts capitalized	$	49,683	$	120,074	$	97,552	$	133,597
Capitalized stock-based compensation		693		148		1,187		447
Total stock-based compensation	$	50,376	$	120,222	$	98,739	$	134,044

Balance Sheet Components (Tables)

9 Months Ended

Sep. 30, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Property and Equipment, Net

The cost and accumulated depreciation and amortization of property and equipment were as follows (in thousands):


	September 30, 2021			December 31, 2020
Computers and equipment	$	4,264		$	2,640
Furniture and fixtures		1,312			1,360
Purchased software		26			26
Leasehold improvements		429			136
Internal-use software		6,838			4,016
Construction in progress		3,410			1,183
Property and equipment, at cost	$	16,279		$	9,361
Less: Accumulated depreciation and amortization		(4,387	)		(2,643	)
Property and equipment, net	$	11,892		$	6,718

Summary of Accrued Expense and Other Liabilities

Accrued expenses and other liabilities consisted of the following (in thousands):


	September 30, 2021		December 31, 2020
Accrued compensation and benefits	$	14,211	$	4,240
Accrued expenses		13,119		7,225
Employee contributions under employee stock purchase plan		9,882		-
Accrued commissions		9,486		10,189
Accrued payroll taxes		8,052		6,756
Other liabilities		11,971		5,301
Total accrued expenses and other liabilities	$	66,721	$	33,711

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (228,362)	$ (198,072)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation and amortization	2,440	1,187
Net amortization of premiums or discounts on marketable securities	1,500	778
Amortization of deferred contract acquisition costs	18,322	10,253
Non-cash operating lease costs	8,566	9,045
Common stock charitable donation expense	13,290	0
Stock-based compensation, net of amounts capitalized	97,552	133,597
Deferred income taxes	1,729	(1,038)
Other	1,671	379
Changes in operating assets and liabilities:
Accounts receivable	(10,874)	(23,599)
Deferred contract acquisition costs	(37,592)	(23,475)
Prepaid expenses and other assets	(17,339)	(3,977)
Accounts payable	1,737	(105)
Accrued expenses and other liabilities	31,490	8,199
Operating lease liabilities	(8,216)	(8,493)
Deferred revenue	42,902	33,659
Net cash used in operating activities	(81,184)	(61,662)
CASH FLOWS FROM INVESTING ACTIVITIES
Capitalization of internal-use software costs	(3,863)	(2,967)
Purchases of marketable securities	(378,912)	(283,420)
Sales of marketable securities	0	4,988
Maturities of marketable securities	180,667	106,986
Purchases of property and equipment	(2,236)	(693)
Other	12	0
Net cash used in investing activities	204,332	(175,106)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from initial public offering, net of underwriting discounts and commissions	786,600	0
Proceeds from issuance of common stock upon exercise of vested options	29,126	7,000
Proceeds from issuance of common stock upon early exercise of unvested options, net of repurchases	18,567	3,331
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs	0	259,865
Payments of deferred offering costs	(3,125)	0
Net cash provided by financing activities	831,168	270,196
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(11)	18
Net increase in cash, cash equivalents, and restricted cash	545,641	33,446
Cash, cash equivalents, and restricted cash at beginning of period	37,806	19,971
Cash, cash equivalents, and restricted cash at end of period	583,447	53,417
Reconciliation of cash, cash equivalents, and restricted cash within the consolidated balance sheets to the amounts shown above:
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Total	583,447	53,417
Cash paid for:
Income taxes	1,741	766
Non-cash investing and financing activities:
Stock-based compensation capitalized in internal-use software costs	1,187	447
Property and equipment included in accounts payable and accrued expenses and other liabilities	545	0
Vesting of early exercised stock options	6,874	4,317
Conversion of convertible founder stock for Series E redeemable convertible preferred stock	$ 0	$ 109,035

Organization and Description of Business - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Class Of Stock [Line Items]
Proceeds from initial public offering, net of underwriting discounts and commissions	$ 786,600	$ 0
Deferred Offering Costs			$ 100
IPO
Class Of Stock [Line Items]
Deferred offering costs, net of reimbursement received from the underwriters	$ 3,400
Class A Common Stock [Member] \| IPO
Class Of Stock [Line Items]
Number of new stock issued during the period	23,000,000
Shares issued, price per share	$ 36.00
Class B Common Stock [Member]
Class Of Stock [Line Items]
Conversion of convertible stock to common stock (shares) common stock upon initial public offering (shares)	115,913,668
Redeemable Convertible Preferred Stock [Member] \| IPO
Class Of Stock [Line Items]
Conversion Basis	equal
Conversion of convertible stock to common stock (shares) common stock upon initial public offering (shares)	115,277,850
Convertible Founder Stock [Member]
Class Of Stock [Line Items]
Conversion of convertible stock to common stock (shares) common stock upon initial public offering (shares)	(635,818)
Convertible Founder Stock [Member] \| IPO
Class Of Stock [Line Items]
Conversion Basis	equal
Conversion of convertible stock to common stock (shares) common stock upon initial public offering (shares)	635,818

Fair Value of Financial Instruments - Financial Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Marketable securities:
Fair value, Marketable securities	$ 448,245	$ 251,756
Municipal bonds [Member]
Marketable securities:
Fair value, Marketable securities	3,046
Fair Value, Measurements, Recurring [Member]
Cash equivalents and Marketable securities:
Assets, Fair Value	739,817	264,165
Fair Value, Measurements, Recurring [Member] \| Municipal bonds [Member]
Marketable securities:
Fair value, Marketable securities	3,046
Fair Value, Measurements, Recurring [Member] \| Corporate Notes and Bonds [Member]
Marketable securities:
Fair value, Marketable securities	102,168	155,740
Fair Value, Measurements, Recurring [Member] \| Commercial Paper [Member]
Marketable securities:
Fair value, Marketable securities	35,842	63,506
Fair Value, Measurements, Recurring [Member] \| U.S. Agency Obligations [Member]
Marketable securities:
Fair value, Marketable securities	15,993	32,510
Fair Value, Measurements, Recurring [Member] \| U.S. Treasury Securities [Member]
Cash equivalents:
Fair value, Cash equivalents	181,994
Marketable securities:
Fair value, Marketable securities	291,196
Fair Value, Measurements, Recurring [Member] \| Money Market Funds [Member]
Cash equivalents:
Fair value, Cash equivalents	109,578	12,409
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member]
Cash equivalents and Marketable securities:
Assets, Fair Value	109,578	12,409
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Municipal bonds [Member]
Marketable securities:
Fair value, Marketable securities	0
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Corporate Notes and Bonds [Member]
Marketable securities:
Fair value, Marketable securities	0	0
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Commercial Paper [Member]
Marketable securities:
Fair value, Marketable securities	0	0
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| U.S. Agency Obligations [Member]
Marketable securities:
Fair value, Marketable securities	0	0
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| U.S. Treasury Securities [Member]
Cash equivalents:
Fair value, Cash equivalents	0
Marketable securities:
Fair value, Marketable securities	0
Fair Value, Measurements, Recurring [Member] \| Level 1 [Member] \| Money Market Funds [Member]
Cash equivalents:
Fair value, Cash equivalents	109,578	12,409
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member]
Cash equivalents and Marketable securities:
Assets, Fair Value	630,239	251,756
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Municipal bonds [Member]
Marketable securities:
Fair value, Marketable securities	3,046
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Corporate Notes and Bonds [Member]
Marketable securities:
Fair value, Marketable securities	102,168	155,740
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Commercial Paper [Member]
Marketable securities:
Fair value, Marketable securities	35,842	63,506
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| U.S. Agency Obligations [Member]
Marketable securities:
Fair value, Marketable securities	15,993	32,510
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| U.S. Treasury Securities [Member]
Cash equivalents:
Fair value, Cash equivalents	181,994
Marketable securities:
Fair value, Marketable securities	291,196
Fair Value, Measurements, Recurring [Member] \| Level 2 [Member] \| Money Market Funds [Member]
Cash equivalents:
Fair value, Cash equivalents	$ 0	$ 0

Net Loss Per Share Attributable to Class A and Class B Stockholders - Schedule of Antidilutive Securities Excluded From Computation of Dilutied Net Loss Per Share (Details) - shares	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	80,211,354	189,577,478
Redeemable Convertible Preferred Stock [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	0	115,277,850
Stock Option [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	70,035,010	71,308,295
Unvested Early Exercised Stock Options [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	2,831,202	2,991,333
RSUs [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	5,997,544	0
ESPP [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share amount	1,347,598	0

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Redeemable Convertible Preferred Stock, Par Value	$ 0.00001	$ 0.00001
Redeemable Convertible Preferred Stock, Shares Authorized	0	115,277,850
Redeemable Convertible Preferred Stock, Shares Issued	0	115,277,850
Redeemable Convertible Preferred Stock, Shares Outstanding	0	115,277,850
Redeemable Convertible Preferred Stock, Liquidation Preference	$ 0	$ 575,085
Preferred Stock, Par Value	$ 0.00001	$ 0.00001
Preferred Stock, Shares Authorized	10,000,000	0
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par Value	$ 0.00001	$ 0.00001
Common Stock, Shares Authorized	0	323,000,000
Common Stock, Shares, Issued	0	109,447,843
Common Stock, Shares, Outstanding	0	109,447,843
Convertible Founder Stock [Member]
Convertible Founder Stock, Par Value	$ 0.00001	$ 0.00001
Convertible Founder Stock, Shares Authorized	0	635,818
Convertible Founder Stock, Shares Issued	0	635,818
Convertible Founder Stock, Shares Outstanding	0	635,818
Class A Common Stock [Member]
Common Stock, Par Value	$ 0.00001	$ 0.00001
Common Stock, Shares Authorized	1,000,000,000	0
Common Stock, Shares, Issued	61,469,976	0
Common Stock, Shares, Outstanding	61,469,976	0
Class B Common Stock [Member]
Common Stock, Par Value	$ 0.00001	$ 0.00001
Common Stock, Shares Authorized	500,000,000	0
Common Stock, Shares, Issued	202,930,117	0
Common Stock, Shares, Outstanding	202,930,117	0

Marketable Securities - Schedule of Fair Value and Amortized Cost of Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Marketable Securities [Line Items]
Amortized Cost	$ 448,248	$ 251,424
Unrealized Gains	65	387
Unrealized Losses	(68)	(55)
Fair Value	448,245	251,756
U.S. agency obligations [Member]
Marketable Securities [Line Items]
Amortized Cost	35,836	32,520
Unrealized Gains	6	0
Unrealized Losses	0	(10)
Fair Value	35,842	32,510
U.S. treasury securities [Member]
Marketable Securities [Line Items]
Amortized Cost	15,998
Unrealized Gains	0
Unrealized Losses	(5)
Fair Value	15,993
Municipal bonds [Member]
Marketable Securities [Line Items]
Amortized Cost	3,045
Unrealized Gains	1
Unrealized Losses	0
Fair Value	3,046
Corporate notes and bonds [Member]
Marketable Securities [Line Items]
Amortized Cost	291,232	155,401
Unrealized Gains	1	360
Unrealized Losses	(37)	(21)
Fair Value	291,196	155,740
Commercial paper [Member]
Marketable Securities [Line Items]
Amortized Cost	102,137	63,503
Unrealized Gains	57	27
Unrealized Losses	(26)	(24)
Fair Value	$ 102,168	$ 63,506

Revenue (Tables)

9 Months Ended

Sep. 30, 2021

Revenue From Contract With Customer [Abstract]

Summary of Revenue Disaggregated by Geographic Markets

The following table sets forth revenue disaggregated by geographic markets based on the location of the customer and by subscription and service categories (dollars in thousands):


	Three Months Ended September 30,								Nine Months Ended September 30,
	2021				2020				2021				2020
Geographic markets:
United States	$	66,264	65	%	$	41,572	68	%	$	172,354	64	%	$	111,982	67	%
International		36,306	35	%		19,925	32	%		95,582	36	%		54,271	33	%
Total revenue	$	102,570	100	%	$	61,497	100	%	$	267,936	100	%	$	166,253	100	%
Subscriptions and services:
Confluent Platform - License	$	17,872	17	%	$	13,205	21	%	$	47,384	18	%	$	33,385	20	%
Confluent Platform - PCS(1)		47,720	47	%		33,526	55	%		131,128	48	%		91,490	55	%
Confluent Cloud		26,808	26	%		7,767	13	%		60,396	23	%		20,539	12	%
Subscription		92,400	90	%		54,498	89	%		238,908	89	%		145,414	87	%
Services		10,170	10	%		6,999	11	%		29,028	11	%		20,839	13	%
Total revenue	$	102,570	100	%	$	61,497	100	%	$	267,936	100	%	$	166,253	100	%

(1) PCS refers to post-contract customer support, maintenance, and upgrades.

Schedule of Activity of Deferred Contract Acquisition Costs

The following table summarizes the activity of deferred contract acquisition costs (in thousands):


	Nine Months Ended September 30,
	2021			2020
Beginning balance	$	47,599		$	25,499
Capitalization of contract acquisition costs		37,591			23,475
Amortization of deferred contract acquisition costs		(18,322	)		(10,253	)
Ending balance	$	66,868		$	38,721

Net Loss Per Share Attributable to Class A and Class B Stockholders - Schedule of Calculation of Basic and Diluted Net Loss Per Share Attributable to Class A and Class B Stockholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Numerator:
Net loss attributable to common stockholders	$ (95,666)	$ (138,141)	$ (228,362)	$ (198,072)
Denominator:
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted	259,152,303	102,852,461	162,728,527	103,856,815
Earnings Per Share Basic And Diluted	$ (0.37)	$ (1.34)	$ (1.40)	$ (1.91)
Common Class A [Member]
Numerator:
Net loss attributable to common stockholders	$ (15,033)	$ 0	$ (19,748)	$ 0
Denominator:
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted	40,722,046	0	14,072,328	0
Earnings Per Share Basic And Diluted	$ (0.37)	$ 0	$ (1.40)	$ 0
Common Class B [Member]
Numerator:
Net loss attributable to common stockholders	$ (80,633)	$ (138,141)	$ (208,614)	$ (198,072)
Denominator:
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted	218,430,257	102,852,461	148,656,199	103,856,815
Earnings Per Share Basic And Diluted	$ (0.37)	$ (1.34)	$ (1.40)	$ (1.91)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details

Stockholders' Equity (Deficit) - Schedule of Weighted-Average Assumptions to Estimate Fair Value of Stock Options (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Expected term (in years)	6 years 29 days	6 years 25 days	6 years 2 months 1 day	6 years 1 month 20 days
Expected volatility	60.40%	70.00%	66.30%	69.40%
Risk-free interest rate	0.90%	0.30%	1.10%	0.40%
Expected dividend yield	0.00%	0.00%	0.00%	0.00%

Stockholders' Equity (Deficit) - Summary of Stock Equity Award Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended	12 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2021	Dec. 31, 2020
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Shares Available for Grant, Beginning Balance	33,750,414	8,293,610	4,722,481	4,722,481
Shares Available for Grant, Increase in authorized shares		32,412,876	16,000,000
Shares Available for Grant, Stock options granted	(22,500)	(3,586,053)	(13,603,242)
Shares Available for Grant, Stock options forfeited	787,166	602,577	1,149,971
Shares Available for Grant, Repurchases of unvested common stock	40,712	78,687	38,400
Shares Available for Grant, RSUs granted	(2,067,031)	(4,070,219)	(14,000)
Shares Available for Grant, RSUs Forfeited	38,610	18,936
Shares Available for Grant, Ending Balance	32,527,371	33,750,414	8,293,610	32,527,371	4,722,481
Outstanding Stock Options, Beginning Balance	75,323,365	79,624,342	71,213,150	71,213,150
Outstanding Stock Options, Stock options granted	22,500	3,586,053	13,603,242
Outstanding Stock Options, Stock options exercised	(4,523,689)	(7,284,453)	(4,042,079)
Outstanding Stock Options, Stock options forfeited	(787,166)	(602,577)	(1,149,971)
Outstanding Stock Options, Ending Balance	70,035,010	75,323,365	79,624,342	70,035,010	71,213,150
Outstanding Stock Options, Vested				24,435,415
Outstanding Stock Options, Vested and expected to vest	70,035,010			70,035,010
Weighted-Average Exercise Price, Beginning Balance	$ 6.33	$ 5.40	$ 3.39	$ 3.39
Weighted-Average Exercise Price, Stock options granted	56.14	20.69	15.18
Weighted-Average Exercise Price, Stock options exercised	2.24	3.33	3.38
Weighted-Average Exercise Price, Stock options forfeited	6.13	4.97	3.34
Weighted-Average Exercise Price, Ending Balance	6.61	$ 6.33	$ 5.40	6.61	$ 3.39
Weighted-Average Exercise Price, Vested	2.90			2.90
Weighted-Average Exercise Price, Vested and Expected to Vest	$ 6.61			$ 6.61
Weighted-Average Remaining Contractual Term (in years)	8 years	8 years 2 months 4 days	8 years 4 months 6 days		8 years 3 months 3 days
Weighted-Average Remaining Contractual Term Vested (in years)				6 years 9 months 29 days
Weighted-Average Remaining Contractual Term Vested and expected to vest (in years)				8 years
Aggregate Intrinsic Value, Beginning Balance	$ 3,101,256	$ 1,158,361	$ 677,503	$ 677,503
Aggregate Intrinsic Value, Ending Balance	3,714,731	$ 3,101,256	$ 1,158,361	3,714,731	$ 677,503
Aggregate Intrinsic Value, Vested as of September 30, 2021	1,386,694			1,386,694
Aggregate Intrinsic Value, Vested and expected to vest as of September 30, 2021	$ 3,714,731			$ 3,714,731

Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

4. Fair Value of Financial Instruments

The following tables summarize the Company’s financial assets that are measured at fair value on a recurring basis (in thousands):


	September 30, 2021
	Level 1		Level 2		Total
Cash equivalents:
U.S. treasury securities	$	-	$	181,994	$	181,994
Money market funds		109,578		-		109,578
Marketable securities:
U.S. treasury securities		-		291,196		291,196
Corporate notes and bonds		-		102,168		102,168
Commercial paper		-		35,842		35,842
U.S. agency obligations		-		15,993		15,993
Municipal bonds		-		3,046		3,046
Total	$	109,578	$	630,239	$	739,817


	December 31, 2020
	Level 1		Level 2		Total
Cash equivalents:
Money market funds	$	12,409	$	-	$	12,409
Marketable securities:
Corporate notes and bonds		-		155,740		155,740
Commercial paper		-		63,506		63,506
U.S. agency obligations		-		32,510		32,510
Total	$	12,409	$	251,756	$	264,165

The Company classifies its highly liquid money market funds within Level 1 of the fair value hierarchy because they are valued based on quoted market prices in active markets. The Company classifies its corporate notes and bonds, commercial paper, U.S. agency obligations, U.S. treasury securities, and municipal bonds within Level 2 of the fair value hierarchy because they are valued using inputs other than quoted prices that are directly or indirectly observable in the market, including readily available pricing sources for the identical underlying security that may not be actively traded. There were no transfers of financial assets between valuation levels during the three and nine months ended September 30, 2021 and 2020.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Net Loss Per Share Attributable to Class A and Class B Stockholders

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Net Loss Per Share

11. Net Loss Per Share

The following table presents the calculation of basic and diluted net loss per share attributable to common stockholders (in thousands, except share and per share data):


	Three Months Ended September 30,
	2021						2020
	Class A			Class B			Class A		Class B
Numerator:
Net loss attributable to common stockholders	$	(15,033	)	$	(80,633	)	$	-	$	(138,141	)
Denominator:
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted		40,722,046			218,430,257			-		102,852,461
Net loss per share attributable to common stockholders, basic and diluted	$	(0.37	)	$	(0.37	)	$	-	$	(1.34	)


	Nine Months Ended September 30,
	2021						2020
	Class A			Class B			Class A		Class B
Numerator:
Net loss attributable to common stockholders	$	(19,748	)	$	(208,614	)	$	-	$	(198,072	)
Denominator:
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted		14,072,328			148,656,199			-		103,856,815
Net loss per share attributable to common stockholders, basic and diluted	$	(1.40	)	$	(1.40	)	$	-	$	(1.91	)

The following outstanding potentially dilutive shares were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because the impact of including them would have been anti-dilutive:


	September 30, 2021		September 30, 2020
Redeemable convertible preferred stock		-		115,277,850
Stock options		70,035,010		71,308,295
Unvested early exercised stock options		2,831,202		2,991,333
RSUs		5,997,544		-
ESPP		1,347,598		-
Total		80,211,354		189,577,478

Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2021

Investments Debt And Equity Securities [Abstract]

Schedule of Fair Value and Amortized Cost of Contractual Maturities

The following table summarizes the contractual maturities of the Company’s marketable securities (in thousands):


	September 30, 2021				December 31, 2020
	Amortized Cost		Fair Value		Amortized Cost		Fair Value
Due within one year	$	283,418	$	283,452	$	180,320	$	180,520
Due after one year through five years		164,830		164,793		71,104		71,236
Total	$	448,248	$	448,245	$	251,424	$	251,756

Schedule of Fair Value and Amortized Cost of Marketable Securities

The following tables summarize the fair values of the Company’s marketable securities (in thousands):


	September 30, 2021
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
U.S. treasury securities	$	291,232	$	1	$	(37	)	$	291,196
Corporate notes and bonds		102,137		57		(26	)		102,168
Commercial paper		35,836		6		-			35,842
U.S. agency obligations		15,998		-		(5	)		15,993
Municipal bonds		3,045		1		-			3,046
Total marketable securities	$	448,248	$	65	$	(68	)	$	448,245


	December 31, 2020
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
Corporate notes and bonds	$	155,401	$	360	$	(21	)	$	155,740
Commercial paper		63,503		27		(24	)		63,506
U.S. agency obligations		32,520		-		(10	)		32,510
Total marketable securities	$	251,424	$	387	$	(55	)	$	251,756

Condensed Consolidated Statements of Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net loss	$ (95,666)	$ (138,141)	$ (228,362)	$ (198,072)
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on marketable securities	258	(489)	(16)	513
Other comprehensive income (loss)	258	(489)	(16)	513
Total comprehensive loss	$ (95,408)	$ (138,630)	$ (228,378)	$ (197,559)

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

- Definition

Amount after tax and reclassification adjustments of other comprehensive income (loss).

+ References

+ Details

Net Loss Per Share Attributable to Class A and Class B Stockholders (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Schedule of Calculation of Basic and Diluted Net Loss Per Share Attributable to Class A and Class B Stockholders

The following table presents the calculation of basic and diluted net loss per share attributable to common stockholders (in thousands, except share and per share data):


	Three Months Ended September 30,
	2021						2020
	Class A			Class B			Class A		Class B
Numerator:
Net loss attributable to common stockholders	$	(15,033	)	$	(80,633	)	$	-	$	(138,141	)
Denominator:
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted		40,722,046			218,430,257			-		102,852,461
Net loss per share attributable to common stockholders, basic and diluted	$	(0.37	)	$	(0.37	)	$	-	$	(1.34	)


	Nine Months Ended September 30,
	2021						2020
	Class A			Class B			Class A		Class B
Numerator:
Net loss attributable to common stockholders	$	(19,748	)	$	(208,614	)	$	-	$	(198,072	)
Denominator:
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted		14,072,328			148,656,199			-		103,856,815
Net loss per share attributable to common stockholders, basic and diluted	$	(1.40	)	$	(1.40	)	$	-	$	(1.91	)

Schedule of Antidilutive Securities Excluded from Diluted Income (Loss) per Share


	September 30, 2021		September 30, 2020
Redeemable convertible preferred stock		-		115,277,850
Stock options		70,035,010		71,308,295
Unvested early exercised stock options		2,831,202		2,991,333
RSUs		5,997,544		-
ESPP		1,347,598		-
Total		80,211,354		189,577,478

Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2021	Oct. 28, 2021
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Trading Symbol	CFLT
Entity Registrant Name	CONFLUENT, INC.
Entity Central Index Key	0001699838
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Title of 12(b) Security	Class A Common Stock, par value $0.00001 per share
Entity File Number	001-40526
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-1824387
Entity Address, Address Line One	899 W. Evelyn Avenue
Entity Address, City or Town	Mountain View
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94041
City Area Code	800
Local Phone Number	439-3207
Document Transition Report	false
Document Quarterly Report	true
Class A Common Stock [Member]
Entity Common Stock, Shares Outstanding		69,539,035
Class B Common Stock [Member]
Entity Common Stock, Shares Outstanding		194,935,375

Income Taxes

9 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Income Taxes

10. Income Taxes

The Company computes its provision for (benefit from) income taxes for interim periods by applying its estimated annual effective tax rate to year-to-date loss or income for includable jurisdictions before income taxes from recurring operations and adjusting for discrete tax items arising in that interim period.

The Company’s provision for (benefit from) income taxes was $0.7 million and $(0.8) million for the three months ended September 30, 2021 and 2020, respectively, and $2.7 million and $(0.5) million for the nine months ended September 30, 2021 and 2020, respectively. The Company’s provision for income taxes for the three and nine months ended September 30, 2021 was primarily driven by a valuation allowance on U.S. and U.K. deferred tax assets, and foreign and state taxes. The Company’s benefit from income taxes for the three and nine months ended September 30, 2020 was primarily driven by a valuation allowance on U.S. deferred tax assets, a stock compensation windfall, and foreign and state taxes.

As of September 30, 2021, gross unrecognized tax benefits were $4.6 million, which would not affect the Company’s effective tax rate if recognized. The Company does not expect its gross unrecognized tax benefits to change significantly within the next 12 months, although it is reasonably possible that certain unrecognized tax benefits may increase or decrease within the next 12 months due to tax examination changes, settlement activities, or the impact on recognition and measurement considerations related to the results of published tax cases or other similar activities. There were no interest and penalties associated with unrecognized income tax benefits for any period presented.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References + Details

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2021
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States (“GAAP”) and applicable rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and note disclosures normally included in the financial statements prepared in accordance with GAAP have been condensed or omitted pursuant to such rules and regulations. Therefore, these condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and notes included in the Company’s final prospectus dated June 23, 2021 and filed with the SEC pursuant to Rule 424(b)(4) on June 25, 2021 (“Final Prospectus”). In management’s opinion, the unaudited condensed consolidated financial statements have been prepared on a basis consistent with the annual consolidated financial statements and reflect all adjustments, which include only normal recurring adjustments, necessary for the fair statement of the Company’s financial position as of September 30, 2021 and the results of operations and cash flows for the three and nine months ended September 30, 2021 and 2020. The results of operations for the three and nine months ended September 30, 2021 are not necessarily indicative of the results to be expected for the full year or any other future interim or annual period. The condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. All intercompany balances and transactions have been eliminated in consolidation.
Use of Estimates	Use of Estimates The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenue and expenses during the reporting period. Such estimates include, but are not limited to, the standalone selling price for each distinct performance obligation included in customer contracts, deferred contract acquisition costs and their period of benefit, valuation of stock-based awards, the fair value of the Company’s common stock prior to its IPO in June 2021, capitalization and estimated useful life of internal-use software, the incremental borrowing rate used to measure operating lease liabilities, and accounting for income taxes. The Company bases its estimates on historical and anticipated results, trends, and various other assumptions that it believes are reasonable under the circumstances. Estimates and assumptions about future events and their effects, including the impact of the COVID-19 pandemic, cannot be determined with certainty and therefore require the exercise of judgment. Actual results could differ from those estimates and any such differences may be material to the Company’s condensed consolidated financial statements.
Significant Accounting Policies	Significant Accounting Policies There have been no significant changes to the Company’s significant accounting policies disclosed in “Note 2 – Basis of Presentation and Summary of Significant Accounting Policies” of the Company’s Final Prospectus.
Recent Accounting Pronouncements	Recent Accounting Pronouncements Recently Adopted Accounting Pronouncements Convertible Instruments: In August 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, which simplifies the accounting for certain financial instruments with characteristics of liabilities and equity. ASU 2020-06 reduces the number of accounting models for convertible debt instruments and convertible preferred stock, and enhances information transparency by making targeted improvements to the disclosures for convertible instruments and earnings per share guidance. The Company adopted this guidance as of January 1, 2021, and the adoption did not have a material impact on its condensed consolidated financial statements. Recent Accounting Pronouncements Not Yet Adopted Credit Losses: In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Statements, which requires the measurement and recognition of expected credit losses for financial assets held at amortized cost, which includes the Company’s accounts receivable, certain financial instruments, and contract assets. ASU 2016-13 replaces the existing incurred loss impairment model with an expected loss methodology. Subsequently, the FASB issued multiple codification improvement amendments to ASU 2016-13. ASU 2016-13 and the applicable subsequent amendments are effective for the Company for the year beginning January 1, 2023, though early adoption is permitted. The Company is currently evaluating the potential impact of this guidance on its consolidated financial statements.

Organization and Description of Business

9 Months Ended

Sep. 30, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Organization and Description of Business

1. Organization and Description of Business

Description of Business

Confluent, Inc. (“Confluent” or the “Company”) created a data infrastructure platform focused on data in motion. Confluent’s platform allows customers to connect their applications, systems, and data layers and can be deployed either as a self-managed software offering, Confluent Platform, or as a fully-managed cloud-native software-as-a-service (“SaaS”) offering, Confluent Cloud. Confluent also offers professional services and education services. The Company was incorporated in the state of Delaware in September 2014 and is headquartered in California with various other global office locations.

Initial Public Offering

In June 2021, the Company completed its initial public offering (“IPO”), in which the Company issued and sold 23,000,000 of its Class A common stock at a public offering price of $36.00 per share, resulting in net proceeds of $786.6 million after deducting underwriting discounts and commissions. Immediately prior to the closing of the IPO, all shares of common stock then outstanding were reclassified as Class B common stock, all 115,277,850 shares of the Company’s outstanding redeemable convertible preferred stock automatically converted into an equal number of shares of Class B common stock, and all 635,818 shares of the Company’s outstanding convertible founder stock automatically converted into an equal number of shares of Class B common stock.

Prior to the IPO, deferred offering costs, which consist of direct incremental legal, accounting, consulting, and other fees relating to the IPO, were capitalized in other assets, non-current on the condensed consolidated balance sheets. Upon the consummation of the IPO, $3.4 million of deferred offering costs, net of reimbursement received from the underwriters, were reclassified into stockholders’ equity as an offset against the IPO proceeds. The Company capitalized $0.1 million of deferred offering costs as of December 31, 2020.

Revenue - Summary of Revenue Disaggregated by Geographic Markets (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation Of Revenue [Line Items]
Total revenue	$ 102,570	$ 61,497	$ 267,936	$ 166,253
Revenue Benchmark [Member] \| Geographic Concentration Risk [Member] \| Major Customers [Member]
Disaggregation Of Revenue [Line Items]
Percentage of Revenue	100.00%	100.00%	100.00%	100.00%
Revenue Benchmark [Member] \| Subscription and Service Concentration Risk [Member] \| Major Customers [Member]
Disaggregation Of Revenue [Line Items]
Percentage of Revenue	100.00%	100.00%	100.00%	100.00%
United States [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 66,264	$ 41,572	$ 172,354	$ 111,982
United States [Member] \| Revenue Benchmark [Member] \| Geographic Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Percentage of Revenue	65.00%	68.00%	64.00%	67.00%
International [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 36,306	$ 19,925	$ 95,582	$ 54,271
International [Member] \| Revenue Benchmark [Member] \| Geographic Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Percentage of Revenue	35.00%	32.00%	36.00%	33.00%
License [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 17,872	$ 13,205	$ 47,384	$ 33,385
License [Member] \| Revenue Benchmark [Member] \| Subscription and Service Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Percentage of Revenue	17.00%	21.00%	18.00%	20.00%
Post Contract Customer Support [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 47,720	$ 33,526	$ 131,128	$ 91,490
Post Contract Customer Support [Member] \| Revenue Benchmark [Member] \| Subscription and Service Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Percentage of Revenue	47.00%	55.00%	48.00%	55.00%
Confluent Cloud [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 26,808	$ 7,767	$ 60,396	$ 20,539
Confluent Cloud [Member] \| Revenue Benchmark [Member] \| Subscription and Service Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Percentage of Revenue	26.00%	13.00%	23.00%	12.00%
Subscription [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 92,400	$ 54,498	$ 238,908	$ 145,414
Subscription [Member] \| Revenue Benchmark [Member] \| Subscription and Service Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Percentage of Revenue	90.00%	89.00%	89.00%	87.00%
Services [Member]
Disaggregation Of Revenue [Line Items]
Total revenue	$ 10,170	$ 6,999	$ 29,028	$ 20,839
Services [Member] \| Revenue Benchmark [Member] \| Subscription and Service Concentration Risk [Member]
Disaggregation Of Revenue [Line Items]
Percentage of Revenue	10.00%	11.00%	11.00%	13.00%

Revenue

9 Months Ended

Sep. 30, 2021

Revenue From Contract With Customer [Abstract]

Revenue

7. Revenue

Disaggregation of Revenue

The following table sets forth revenue disaggregated by geographic markets based on the location of the customer and by subscription and service categories (dollars in thousands):


	Three Months Ended September 30,								Nine Months Ended September 30,
	2021				2020				2021				2020
Geographic markets:
United States	$	66,264	65	%	$	41,572	68	%	$	172,354	64	%	$	111,982	67	%
International		36,306	35	%		19,925	32	%		95,582	36	%		54,271	33	%
Total revenue	$	102,570	100	%	$	61,497	100	%	$	267,936	100	%	$	166,253	100	%
Subscriptions and services:
Confluent Platform - License	$	17,872	17	%	$	13,205	21	%	$	47,384	18	%	$	33,385	20	%
Confluent Platform - PCS(1)		47,720	47	%		33,526	55	%		131,128	48	%		91,490	55	%
Confluent Cloud		26,808	26	%		7,767	13	%		60,396	23	%		20,539	12	%
Subscription		92,400	90	%		54,498	89	%		238,908	89	%		145,414	87	%
Services		10,170	10	%		6,999	11	%		29,028	11	%		20,839	13	%
Total revenue	$	102,570	100	%	$	61,497	100	%	$	267,936	100	%	$	166,253	100	%

(1) PCS refers to post-contract customer support, maintenance, and upgrades.

Remaining Performance Obligations (“RPO”)

RPO represent the amount of contracted future revenue that has not yet been recognized as of the end of each period, including both deferred revenue that has been invoiced and non-cancelable committed amounts that will be invoiced and recognized as revenue in future periods. RPO exclude pay-as-you-go arrangements. As of September 30, 2021, the Company’s RPO is $385.0 million, approximately 67% of which is expected to be recognized as revenue over the next 12 months and the substantial majority of the remainder in the next 13 to 36 months.

Deferred Revenue

Deferred revenue, including current and non-current balances as of September 30, 2021 and December 31, 2020 was $202.1 million and $159.2 million, respectively. For the nine months ended September 30, 2021 and 2020, revenue recognized from deferred revenue at the beginning of the year was $118.4 million and $73.4 million, respectively.

Accounts Receivable

Accounts receivable on the condensed consolidated balance sheets consists of trade accounts receivable and unbilled receivables, net of an allowance for doubtful accounts due to collection risk related to these receivables. The Company’s allowance for doubtful accounts was not material as of September 30, 2021 and December 31, 2020.

Unbilled receivables represent revenue recognized in excess of invoiced amounts for the Company’s unconditional right to consideration in exchange for goods or services that the Company has transferred to the customer, such that only the passage of time is required before payment of consideration is due. The unbilled receivables balance was $26.6 million and $17.6 million as of September 30, 2021 and December 31, 2020, respectively.

Deferred Contract Acquisition Costs

The following table summarizes the activity of deferred contract acquisition costs (in thousands):


	Nine Months Ended September 30,
	2021			2020
Beginning balance	$	47,599		$	25,499
Capitalization of contract acquisition costs		37,591			23,475
Amortization of deferred contract acquisition costs		(18,322	)		(10,253	)
Ending balance	$	66,868		$	38,721

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-URI http://asc.fasb.org/topic&trid=49130388

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130556-203045

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130550-203045

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 15
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130558-203045

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130554-203045

+ Details

Balance Sheet Components

9 Months Ended

Sep. 30, 2021

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Balance Sheet Components

5. Balance Sheet Components

Property and Equipment, Net

The cost and accumulated depreciation and amortization of property and equipment were as follows (in thousands):


	September 30, 2021			December 31, 2020
Computers and equipment	$	4,264		$	2,640
Furniture and fixtures		1,312			1,360
Purchased software		26			26
Leasehold improvements		429			136
Internal-use software		6,838			4,016
Construction in progress		3,410			1,183
Property and equipment, at cost	$	16,279		$	9,361
Less: Accumulated depreciation and amortization		(4,387	)		(2,643	)
Property and equipment, net	$	11,892		$	6,718

Depreciation and amortization expense was $0.9 million and $0.5 million for the three months ended September 30, 2021 and 2020, respectively, and $2.4 million and $1.2 million for the nine months ended September 30, 2021 and 2020, respectively.

Accrued Expenses and Other Liabilities

Accrued expenses and other liabilities consisted of the following (in thousands):


	September 30, 2021		December 31, 2020
Accrued compensation and benefits	$	14,211	$	4,240
Accrued expenses		13,119		7,225
Employee contributions under employee stock purchase plan		9,882		-
Accrued commissions		9,486		10,189
Accrued payroll taxes		8,052		6,756
Other liabilities		11,971		5,301
Total accrued expenses and other liabilities	$	66,721	$	33,711

Commitments and Contingencies

9 Months Ended

Sep. 30, 2021

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

6. Commitments and Contingencies

Leases

The Company has entered into non-cancelable operating leases, primarily for the rent of office space expiring at various dates through 2029. Certain lease agreements contain an option for the Company to renew the lease for a term of up to three years or an option to terminate the lease early within three years of lease termination. The Company considers these options in determining the lease term on a lease-by-lease basis. None of the Company’s lease agreements contain any material non-lease components, material residual value guarantees, or material restrictive covenants.

In 2019, the Company issued a letter of credit of $8.2 million for its office space in Mountain View, California. No draws have been made under the letter of credit as of September 30, 2021 and December 31, 2020.

In addition, the Company subleases certain floors of its unoccupied office space expiring at various dates through 2022. Sublease income is recorded as a reduction of lease expense. Sublease income was not material for the three months ended September 30, 2021 and 2020, and $2.2 million and $2.1 million for the nine months ended September 30, 2021 and 2020, respectively.

Purchase Obligations

As of September 30, 2021, there were no material changes to the Company’s purchase obligations since December 31, 2020.

Legal Matters

From time to time, the Company has become involved in claims and other legal matters arising in the ordinary course of business. The Company investigates these claims as they arise. For the three and nine months ended September 30, 2021 and 2020, the Company is not aware of any matters that would individually or taken together have a material adverse effect on its results of operations, financial position, or cash flows.

Indemnification

The Company enters into indemnification provisions under its agreements with other companies in the ordinary course of business, including customers, business partners, landlords, and certain third-party vendors. Under these arrangements, the Company agrees to indemnify, hold harmless, and reimburse the indemnified party for certain losses suffered or incurred by the indemnified party resulting from certain Company activities. The terms of these indemnification agreements are generally perpetual. The maximum potential amount of future payments the Company could be required to make under these agreements is not determinable. The Company has not, as of September 30, 2021 and December 31, 2020, incurred material costs to defend lawsuits or settle claims related to these indemnification agreements. The Company maintained commercial general liability insurance and product liability insurance during the three and nine months ended September 30, 2021 and 2020 to offset certain of the Company’s potential liabilities under these indemnification provisions.

The Company also indemnifies certain of its officers, directors, and certain key employees while they are serving in good faith in their respective capacities. As of September 30, 2021 and December 31, 2020, the Company has not incurred material costs to defend lawsuits or settle claims related to these indemnification agreements.

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue:
Total revenue	$ 102,570	$ 61,497	$ 267,936	$ 166,253
Cost of revenue:
Total cost of revenue	37,299	19,056	91,146	54,559
Gross profit	65,271	42,441	176,790	111,694
Operating expenses:
Research and development	47,701	44,921	105,239	83,538
Sales and marketing	86,991	43,759	218,706	118,523
General and administrative	25,330	93,758	78,785	110,507
Total operating expenses	160,022	182,438	402,730	312,568
Operating loss	(94,751)	(139,997)	(225,940)	(200,874)
Interest income	299	1,259	1,831	3,005
Other expense, net	(530)	(153)	(1,509)	(671)
Loss before income taxes	(94,982)	(138,891)	(225,618)	(198,540)
Provision for (benefit from) income taxes	684	(750)	2,744	(468)
Net loss	$ (95,666)	$ (138,141)	$ (228,362)	$ (198,072)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.37)	$ (1.34)	$ (1.40)	$ (1.91)
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted	259,152,303	102,852,461	162,728,527	103,856,815
Subscription [Member]
Revenue:
Total revenue	$ 92,400	$ 54,498	$ 238,908	$ 145,414
Cost of revenue:
Total cost of revenue	25,489	12,373	61,538	35,121
Services [Member]
Revenue:
Total revenue	10,170	6,999	29,028	20,839
Cost of revenue:
Total cost of revenue	$ 11,810	$ 6,683	$ 29,608	$ 19,438

Balance Sheet Components - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Property Plant And Equipment [Abstract]
Depreciation and amortization	$ 900	$ 500	$ 2,440	$ 1,187

Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets Measured on Recurring Basis

The following tables summarize the Company’s financial assets that are measured at fair value on a recurring basis (in thousands):


	September 30, 2021
	Level 1		Level 2		Total
Cash equivalents:
U.S. treasury securities	$	-	$	181,994	$	181,994
Money market funds		109,578		-		109,578
Marketable securities:
U.S. treasury securities		-		291,196		291,196
Corporate notes and bonds		-		102,168		102,168
Commercial paper		-		35,842		35,842
U.S. agency obligations		-		15,993		15,993
Municipal bonds		-		3,046		3,046
Total	$	109,578	$	630,239	$	739,817


	December 31, 2020
	Level 1		Level 2		Total
Cash equivalents:
Money market funds	$	12,409	$	-	$	12,409
Marketable securities:
Corporate notes and bonds		-		155,740		155,740
Commercial paper		-		63,506		63,506
U.S. agency obligations		-		32,510		32,510
Total	$	12,409	$	251,756	$	264,165

Stockholders' Equity (Deficit) - Schedule of Restricted Stock Unit Activity (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares	3 Months Ended
	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding [Roll Forward]
Number of Shares, Beginning Balance	4,050,033	14,000	0
Number of Shares, RSUs granted	2,067,031	4,070,219	14,000
Number of Shares, RSUs vested	(80,910)	(15,250)	0
Number of Shares, RSUs forfeited	(38,610)	(18,936)	0
Number of Shares, Ending Balance	5,997,544	4,050,033	14,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Weighted-average grant date fair value, Beginning Balance (in dollars per share)	$ 28.93	$ 19.36	$ 0
Weighted-average grant date fair value, RSUs granted (in dollars per share)	56.14	28.90	19.36
Weighted-average grant date fair value, RSUs vested (in dollars per share)	29.46	19.94	0
Weighted-average grant date fair value, RSUs forfeited (in dollars per share)	38.65	21.76	0
Weighted-average grant date fair value, Ending Balance (in dollars per share)	$ 38.24	$ 28.93	$ 19.36

Redeemable Convertible Preferred Stock - Additional Information (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Temporary Equity [Line Items]
Redeemable Convertible Preferred Stock, Shares Issued	0	115,277,850
Redeemable Convertible Preferred Stock, Shares Outstanding	0	115,277,850
Class B Common Stock [Member]
Temporary Equity [Line Items]
Convertible preferred stock, shares issued upon conversion	115,277,850
Convertible preferred stock, shares issued upon conversion, carrying value	$ 574.6

Balance Sheet Components - Summary of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 16,279	$ 9,361
Less: Accumulated depreciation and amortization	(4,387)	(2,643)
Property and equipment, net	11,892	6,718
Computers and Equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	4,264	2,640
Furniture and Fixtures [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,312	1,360
Software [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	26	26
Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	429	136
Internal-use Software [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	6,838	4,016
Construction in Progress [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 3,410	$ 1,183

Redeemable Convertible Preferred Stock

9 Months Ended

Sep. 30, 2021

Temporary Equity Disclosure [Abstract]

Redeemable Convertible Preferred Stock

8. Redeemable Convertible Preferred Stock

Immediately prior to the closing of the IPO, all shares of the Company’s redeemable convertible preferred stock outstanding, totaling 115,277,850, were automatically converted into an equal number of shares of Class B common stock and their carrying value of $574.6 million was reclassified into stockholders’ equity. As of September 30, 2021, there were no shares of redeemable convertible preferred stock issued and outstanding.

Stockholders' Equity (Deficit) - Common Stock Reserved for Future Issuance (Details) - shares	Sep. 30, 2021	Dec. 31, 2020
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	113,722,500	191,849,299
2014 Stock Plan [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	0	4,722,481
2014 Stock Plan [Member] \| Stock Options [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	70,012,510	71,213,150
2014 Stock Plan [Member] \| RSUs [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	3,943,814	0
2021 Equity Incentive Plan [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	32,527,371	0
2021 Equity Incentive Plan [Member] \| Stock Options [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	22,500	0
2021 Equity Incentive Plan [Member] \| RSUs [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	2,053,730	0
2021 Employee Stock Purchase Plan [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)	5,162,575	0
Redeemable Convertible Preferred Stock [Member]
Class Of Stock [Line Items]
Convertible preferred stock reserved for issuance (in shares)	0	115,277,850
Convertible Founder Stock [Member]
Class Of Stock [Line Items]
Convertible founder stock (in shares)	0	635,818

Stockholders' Equity (Deficit) - Summary of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	$ 49,683	$ 120,074	$ 97,552	$ 133,597
Capitalized stock-based compensation	693	148	1,187	447
Total stock-based compensation	50,376	120,222	98,739	134,044
Cost of Revenue [Member] \| Subscription [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	3,945	883	7,092	1,869
Cost of Revenue [Member] \| Services [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	1,790	671	3,389	1,333
Research and Development [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	16,310	26,522	28,753	30,818
Sales and Marketing [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	18,516	6,379	34,647	11,487
General and Administrative [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation, net of amounts capitalized	$ 9,122	$ 85,619	$ 23,671	$ 88,090

Stockholders' Equity (Deficit) - Additional Information (Details) $ / shares in Units, $ in Thousands	1 Months Ended			3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2021 shares	Sep. 30, 2020 USD ($) $ / shares shares	Jul. 31, 2020 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2021 USD ($) Vote $ / shares shares	Sep. 30, 2020 USD ($) $ / shares shares	Dec. 31, 2020 USD ($) $ / shares shares
Class Of Stock [Line Items]
Preferred Stock Shares Authorized				10,000,000		10,000,000		0
Preferred Stock Par Or Stated Value Per Share \| $ / shares				$ 0.00001		$ 0.00001		$ 0.00001
Common Stock Shares Authorized				0		0		323,000,000
Conversion, percent threshold						10.00%
Common stock charitable donation expense \| $						$ 13,290	$ 0
Common Stock, Par Value \| $ / shares				$ 0.00001		$ 0.00001		$ 0.00001
Common stock reserved for issuance (in shares)				113,722,500		113,722,500		191,849,299
Intrinsic value of options exercised \| $						$ 433,400	$ 45,000
Weighted average grant date fair value per share of options granted \| $ / shares						$ 12.43	$ 3.58
Shares early exercised and repurchase						2,831,202		2,338,945
Liabilities for early exercise of unvested stock options and other liabilities \| $				$ 18,800		$ 18,800		$ 6,900
Stock based compensation expense \| $				$ 49,683	$ 120,074	97,552	$ 133,597
Cumulative stock-based compensation expense \| $						$ 3,800
Expected dividend yield				0.00%	0.00%	0.00%	0.00%
Unrecognized stock-based compensation expense \| $				$ 497,200		$ 497,200
Unrecognized stock-based compensation expense, weighted-average period						3 years 3 months 18 days
Tender Offer [Member]
Class Of Stock [Line Items]
Stock based compensation expense \| $					$ 76,300
Shares issued, price per share \| $ / shares			$ 14.9687
Aggregate purchase price of stock issued \| $			$ 137,200
Tender Offer [Member] \| Common Stock [Member]
Class Of Stock [Line Items]
Number of shares sold in transaction			1,883,233
Secondary Sales [Member]
Class Of Stock [Line Items]
Stock based compensation expense \| $					$ 35,600
Secondary Sales [Member] \| Director [Member]
Class Of Stock [Line Items]
Number of shares sold in transaction		2,632,747
Shares issued, price per share \| $ / shares				$ 14.9687		$ 14.9687
Aggregate purchase price of stock issued \| $		$ 39,400
Secondary Sales [Member] \| Director And Employee [Member]
Class Of Stock [Line Items]
Number of shares sold in transaction		2,142,900
Shares issued, price per share \| $ / shares		$ 14.00			$ 14.00		$ 14.00
Aggregate purchase price of stock issued \| $		$ 30,000
Convertible Founder Stock [Member]
Class Of Stock [Line Items]
Convertible founder stock shares issued upon conversion from IPO				635,818		635,818
Convertible Founder Stock, Shares Issued				0		0		635,818
Convertible Founder Stock, Shares Outstanding	0			0		0		635,818
Conversion of convertible founder stock for Series E redeemable convertible preferred stock (shares)					(7,284,182)		(7,284,182)
Convertible Founder Stock [Member] \| Tender Offer [Member]
Class Of Stock [Line Items]
Number of shares sold in transaction			7,284,182
Common Class A [Member]
Class Of Stock [Line Items]
Common Stock Shares Authorized				1,000,000,000		1,000,000,000		0
Common stock, voting rights, votes per share \| Vote						1
Donation stock issued during the period	250,000					250,000
Number of new stock issued during the period						23,000,000
Common stock charitable donation expense \| $						$ 13,300
Common Stock, Par Value \| $ / shares				$ 0.00001		$ 0.00001		$ 0.00001
Common Class B [Member]
Class Of Stock [Line Items]
Common Stock Shares Authorized				500,000,000		500,000,000		0
Common stock, voting rights, votes per share \| Vote						10
Common Stock, Par Value \| $ / shares				$ 0.00001		$ 0.00001		$ 0.00001
Convertible preferred stock, shares issued upon conversion				115,277,850		115,277,850
Series E Redeemable Convertible Preferred Stock [Member] \| Tender Offer [Member]
Class Of Stock [Line Items]
Conversion of convertible founder stock for Series E redeemable convertible preferred stock (shares)			7,284,182
2021 Plan [Member] \| Common Class A [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)				25,812,876		25,812,876
2021 Employee Stock Purchase Plan [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)				5,162,575		5,162,575		0
Expected dividend yield				0.00%
2021 Employee Stock Purchase Plan [Member] \| Common Class A [Member]
Class Of Stock [Line Items]
Common stock reserved for issuance (in shares)				5,162,575		5,162,575
Purchase price of common stock expressed as a percentage of its fair value						85.00%
Performance Based Vesting Condition [Member]
Class Of Stock [Line Items]
Performance options, shares						2,875,255		2,875,255
Service Based Vesting Condition [Member]
Class Of Stock [Line Items]
Performance options, shares						2,875,255		2,875,255
Restricted Stock Units (RSUs) [Member]
Class Of Stock [Line Items]
Service based vesting period						4 years
Stock based compensation expense \| $						$ 6,800