Datadog (DDOG) 10-Q 12 May 20 2020 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 04, 2020
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Trading Symbol	DDOG
Entity Registrant Name	Datadog, Inc.
Entity Central Index Key	0001561550
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 Shell Company	false
Entity Current Reporting Status	Yes
Entity File Number	001-39051
Entity Tax Identification Number	27-2825503
Entity Address, Address Line One	620 8th Avenue
Entity Address, Address Line Two	45th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10018
City Area Code	866
Local Phone Number	329-4466
Title of 12(b) Security	Class A common stock, par value $0.00001 per share
Security Exchange Name	NASDAQ
Entity Incorporation, State or Country Code	DE
Class A Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		176,047,887
Class B Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding		123,330,727

CONDENSED CONSOLIDATED BALANCE

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents	$ 194,350	$ 597,297
Marketable securities	600,384	176,674
Accounts receivable, net of allowance for credit losses of $1,649 and $817 as of March 31, 2020 and December 31, 2019, respectively	108,437	102,394
Deferred contract costs, current	9,314	8,346
Prepaid expenses and other current assets	20,580	19,231
Total current assets	933,065	903,942
Property and equipment, net	34,084	32,749
Operating lease assets	51,286	53,002
Goodwill	8,891	9,058
Intangible assets, net	1,176	1,435
Deferred contract costs, non-current	18,875	17,409
Restricted cash	3,382	3,456
Other assets	15,897	16,990
TOTAL ASSETS	1,066,656	1,038,041
CURRENT LIABILITIES:
Accounts payable	14,205	15,429
Accrued expenses and other current liabilities	41,755	38,746
Operating lease liabilities, current	13,436	11,916
Deferred revenue, current	141,242	134,148
Total current liabilities	210,638	200,239
Operating lease liabilities, non-current	46,042	48,510
Deferred revenue, non-current	3,940	4,340
Other liabilities	3,141	2,611
Total liabilities	263,761	255,700
COMMITMENTS AND CONTINGENCIES (NOTE 7)
STOCKHOLDERS' EQUITY:
Additional paid-in capital	921,091	905,821
Accumulated other comprehensive (loss) income	(1,062)	133
Accumulated deficit	(117,137)	(123,616)
Total stockholders’ equity	802,895	782,341
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,066,656	1,038,041
Class A Common Stock
STOCKHOLDERS' EQUITY:
Common stock, value	2	1
Class B Common Stock
STOCKHOLDERS' EQUITY:
Common stock, value	$ 1	$ 2

CONDENSED CONSOLIDATED BALANC_2

CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accounts receivable, net of allowance for credit losses	$ 1,649	$ 817
Class A Common Stock
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common stock, shares issued	153,495,803	64,308,498
Common stock, shares outstanding	153,495,803	64,308,498
Class B Common Stock
Common stock, par value	$ 0.00001	$ 0.00001
Common stock, shares authorized	310,000,000	310,000,000
Common stock, shares issued	145,238,917	232,078,452
Common stock, shares outstanding	145,238,917	232,078,452

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Revenue	$ 131,248	$ 70,050
Cost of revenue	26,479	18,950
Gross profit	104,769	51,100
Operating expenses:
Research and development	40,824	22,815
Sales and marketing	45,215	30,107
General and administrative	14,952	7,840
Total operating expenses	100,991	60,762
Operating income (loss)	3,778	(9,662)
Other income, net	2,896	230
Income (loss) before provision for income taxes	6,674	(9,432)
Provision for income taxes	(195)	(59)
Net income (loss)	6,479	(9,491)
Net income (loss) attributable to common stockholders	$ 6,479	$ (9,491)
Basic net income (loss) per share	$ 0.02	$ (0.12)
Diluted net income (loss) per share	$ 0.02	$ (0.12)
Weighted average shares used in calculating basic net income (loss) per share:	295,455	77,061
Weighted average shares used in calculating diluted net income (loss) per share:	327,801	77,061

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 6,479	$ (9,491)
Other comprehensive loss:
Foreign currency translation adjustments	(287)	(50)
Unrealized loss on available-for-sale marketable securities	(908)
Other comprehensive loss:	(1,195)	(50)
Comprehensive income (loss)	$ 5,284	$ (9,541)

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY (DEFICIT) (Unaudited) - USD ($) $ in Thousands	Total	Convertible Preferred Stock	Class A and Class B Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive (Loss) Income	Accumulated Deficit	Common Stock
Beginning balance at Dec. 31, 2018	$ (76,041)			$ 30,834	$ 31	$ (106,906)
Convertible preferred stock, beginning balance, shares at Dec. 31, 2018		179,814,912
Convertible preferred stock, beginning balance at Dec. 31, 2018		$ 140,805
Beginning balance, shares at Dec. 31, 2018							78,180,606
Issuance of common stock upon exercise of stock options	1,308			1,308
Issuance of common stock upon exercise of stock options, shares							2,773,200
Vesting of early exercised stock options	214			214
Stock-based compensation	2,497			2,497
Change in accumulated other comprehensive income (loss)	(50)
Change in accumulated other comprehensive income (loss)	(51)				(51)
Net income (loss)	(9,491)					(9,491)
Ending balance at Mar. 31, 2019	(81,564)			34,853	(20)	(116,397)
Convertible preferred stock, ending balance, shares at Mar. 31, 2019		179,814,912
Convertible preferred stock, ending balance at Mar. 31, 2019		$ 140,805
Ending balance, shares at Mar. 31, 2019							80,953,806
Beginning balance at Dec. 31, 2019	782,341		$ 3	905,821	133	(123,616)
Beginning balance, shares at Dec. 31, 2019			296,386,950
Issuance of common stock upon exercise of stock options	$ 2,813			2,813
Issuance of common stock upon exercise of stock options, shares	2,347,770		2,347,770
Vesting of early exercised stock options	$ 294			294
Stock-based compensation	12,163			12,163
Change in accumulated other comprehensive income (loss)	(1,195)				(1,195)
Net income (loss)	6,479					6,479
Ending balance at Mar. 31, 2020	$ 802,895		$ 3	$ 921,091	$ (1,062)	$ (117,137)
Ending balance, shares at Mar. 31, 2020			298,734,720

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 6,479	$ (9,491)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	3,688	2,111
Amortization of discounts or premiums on marketable securities	244
Amortization of deferred contract costs	2,185	1,028
Stock-based compensation, net of amounts capitalized	12,060	2,445
Non-cash lease expense	3,226	117
Provision for accounts receivable allowance	1,073	74
Loss on disposal of property and equipment	2	4
Changes in operating assets and liabilities:
Accounts receivable, net	(7,116)	(7,585)
Deferred contract costs	(4,619)	(3,390)
Prepaid expenses and other current assets	(1,404)	(8,492)
Other assets	919	(8,219)
Accounts payable	(1,391)	14,524
Accrued expenses and other liabilities	2,025	1,408
Deferred revenue	6,884	18,884
Net cash provided by operating activities	24,255	3,418
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of marketable securities	(427,482)
Maturities of marketable securities	2,620
Purchases of property and equipment	(1,526)	(2,197)
Capitalized software development costs	(3,417)	(2,096)
Net cash used in investing activities	(429,805)	(4,293)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	2,813	1,776
Initial public offering costs	(153)
Net cash provided by financing activities	2,660	1,776
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(141)	(87)
NET (DECREASE) INCREASE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	(403,031)	814
CASH, CASH EQUIVALENTS AND RESTRICTED CASH—Beginning of period	601,189	64,980
CASH, CASH EQUIVALENTS AND RESTRICTED CASH —End of period	198,158	65,794
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for income taxes	34	3
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Accrued property and equipment purchases	610	577
Stock-based compensation included in capitalized software development costs	103	52
Vesting of early exercised options	294	214
Costs related to initial public offering included in accounts payable and accrued liabilities	268
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH WITHIN THE CONDENSED CONSOLIDATED BALANCE SHEETS TO THE AMOUNTS SHOWN IN THE STATEMENTS OF CASH FLOWS ABOVE:
Cash and cash equivalents	194,350	54,554
Restricted cash – Including amounts in prepaid expense and other current assets and other assets	$ 3,808	$ 11,240
Restricted Cash and Cash Equivalents, Asset, Statement of Financial Position [Extensible List]	ddog:PrepaidExpenseOtherCurrentAssetsAndOtherAssets	ddog:PrepaidExpenseOtherCurrentAssetsAndOtherAssets
CASH, CASH EQUIVALENTS AND RESTRICTED CASH —End of period	$ 198,158	$ 65,794

Organization and Description of

Organization and Description of Business	3 Months Ended
	Mar. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Organization and Description of Business	1. Organization and Description of Business Description of Business Datadog, Inc. (“Datadog” or the “Company”) was incorporated in the State of Delaware on June 4, 2010. The Company is the monitoring and analytics platform for developers, IT operations teams and business users in the cloud age. The Company’s SaaS platform integrates and automates infrastructure monitoring, application performance monitoring, log management, user experience and network performance monitoring to provide unified, real-time observability of its customers’ entire technology stack. The Company is headquartered in New York City and has various other global office locations.

Basis of Presentation and Summa

Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	2. Basis of Presentation and Summary of Significant Accounting Policies Unaudited Interim Condensed Consolidated Financial Information The unaudited condensed consolidated financial statements include the accounts of Datadog, Inc. and its wholly owned subsidiaries, and have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and following the requirements of the Securities and Exchange Commission (“SEC”) for interim reporting. As permitted under those rules, certain footnotes or other financial information that are normally required by GAAP can be condensed or omitted. These financial statements have been prepared on the same basis as the Company’s annual financial statements and, in the opinion of management, reflect all adjustments, consisting only of normal recurring adjustments, which are necessary for the fair statement of the Company’s financial information. These interim results are not necessarily indicative of the results to be expected for the fiscal year ending December 31, 2020 or for any other interim period or for any other future year. The accompanying unaudited condensed consolidated financial statements and related financial information should be read in conjunction with the audited consolidated financial statements and the related notes contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2019, as filed with the SEC on February 25, 2020 (the “Annual Report”). Basis of Presentation The accompanying condensed consolidated financial statements have been prepared in accordance with GAAP. Principles of Consolidation The condensed consolidated financial statements include the accounts of Datadog, Inc. and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Stock Split On September 6, 2019, the Board and stockholders approved an amended and restated certificate of incorporation of the Company effecting a 3-for-1 stock split of the Company’s issued and outstanding shares of common stock and convertible preferred stock, and an increase to the authorized shares of the Company’s common stock and convertible preferred stock to 380,000,000 shares and 179,814,912 shares, respectively. The split was effected on September 6, 2019 and without any change in the par value per share. All information related to the Company’s common stock, convertible preferred stock and stock awards has been retroactively adjusted to give effect to the 3-for-1 stock split on September 6, 2019. Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Such estimates include the fair value of marketable securities, the allowance for credit losses, the fair value of acquired assets and assumed liabilities from business combinations, useful lives of property, equipment, software, and finite lived intangibles, stock-based compensation including the determination of the fair value of the Company’s stock prior to its initial public offering (“IPO”), fair value of common stock and redeemable convertible preferred stock prior to the IPO, valuation of long-lived assets and their recoverability, including goodwill, estimated expected period of benefit for deferred contract costs, the incremental borrowing rate for operating leases, realization of deferred tax assets and uncertain tax positions, revenue recognition and the allocation of overhead costs between cost of revenue and operating expenses. The Company bases its estimates on historical experience and also on assumptions that management considers reasonable. The Company assesses these estimates on a regular basis; however, actual results could materially differ from these estimates. Accounting Pronouncements Recently Adopted In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments— Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments In August 2018, the FASB issued ASU No. 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract Accounting Pronouncements Not Yet Adopted In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which aims to reduce complexity in accounting standards by improving certain areas of GAAP without compromising information provided to users of financial statements. This guidance will be effective for the Company beginning January 1, 2021. The Company is currently evaluating the impact of the adoption of this standard on its condensed consolidated financial statements.

Marketable Securities

Marketable Securities	3 Months Ended
	Mar. 31, 2020
Investments Debt And Equity Securities [Abstract]
Marketable Securities	3. Marketable Securities The following is a summary of available-for-sale marketable securities, excluding those securities classified within cash and cash equivalents, on the condensed consolidated balance sheets (in thousands): March 31, 2020 Amortized Cost Unrealized Gain Unrealized Losses Fair Value Commercial debt securities $ 321,534 $ 60 $ (2,096 ) $ 319,498 Certificates of deposit 39,865 54 — 39,919 U.S. government agencies 14,914 58 — 14,972 U.S. government treasury securities 106,033 1,023 — 107,056 Commercial paper 118,908 31 — 118,939 Marketable securities $ 601,254 $ 1,226 $ (2,096 ) $ 600,384 December 31, 2019 Amortized Cost Unrealized Gain Unrealized Losses Fair Value Commercial debt securities $ 80,376 $ 46 $ (5 ) $ 80,417 U.S. government treasury securities 72,467 10 (4 ) 72,473 Commercial paper 23,784 — — 23,784 Marketable securities $ 176,627 $ 56 $ (9 ) $ 176,674 As of March 31, 2020, the fair values of available-for-sale marketable securities, by remaining contractual maturity, were as follows (in thousands): Due within one year $ 478,459 Due in one year through five years 121,925 Total $ 600,384 The Company does not believe that any unrealized losses are attributable to credit-related factors based on its evaluation of available evidence. To determine whether a decline in value is related to credit loss, the Company evaluates, among other factors: the extent to which the fair value is less than the amortized cost basis, changes to the rating of the security by a rating agency and any adverse conditions specifically related to an issuer of a security or its industry. No tax benefits on unrealized losses have been reflected in the condensed consolidated statement of comprehensive income (loss) due to the Company’s full valuation allowance as of March 31, 2020 and December 31, 2019.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Fair Value Measurements	4. Fair Value Measurements The following tables present information about the Company’s financial assets and liabilities that have been measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019, and indicate the fair value hierarchy of the valuation inputs utilized to determine such fair value (in thousands): Fair Value Measurement as of March 31, 2020 Level 1 Level 2 Level 3 Total Financial Assets: Cash equivalents: Money market funds $ 138,733 $ — $ — $ 138,733 Commercial paper — 27,478 — 27,478 U.S. government treasury securities — 12,000 — 12,000 Certificates of deposit — 3,202 — 3,202 Marketable Securities: Corporate debt securities — 319,499 — 319,499 U.S. government agencies — 14,972 — 14,972 Certificates of deposit — 39,919 — 39,919 U.S. government treasury securities — 107,054 — 107,054 Commercial paper — 118,940 — 118,940 Total financial assets $ 138,733 $ 643,064 $ — $ 781,797 Fair Value Measurement as of December 31, 2019 Level 1 Level 2 Level 3 Total Financial Assets: Cash equivalents: Money market funds $ 588,762 $ — $ — $ 588,762 Marketable Securities: Corporate debt securities — 80,417 — 80,417 U.S. government treasury securities — 72,473 — 72,473 Commercial paper — 23,784 — 23,784 Total financial assets $ 588,762 $ 176,674 $ — $ 765,436 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 commercial paper, corporate debt securities, U.S. government agencies, certificates of deposit, and U.S. government treasury securities within Level 2 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 which may not be actively traded.

Property and Equipment, Net

Property and Equipment, Net	3 Months Ended
	Mar. 31, 2020
Property Plant And Equipment [Abstract]
Property and Equipment, Net	5. Property and Equipment, Net Property and equipment, net consisted of the following (in thousands): March 31, 2020 December 31, 2019 Computers and equipment $ 8,667 $ 7,536 Furniture and fixtures 4,939 4,804 Leasehold improvements 16,487 16,517 Capitalized software development costs 28,150 24,630 Total property and equipment $ 58,243 $ 53,487 Less: accumulated depreciation and amortization (24,159 ) (20,738 ) Total property and equipment, net $ 34,084 $ 32,749 The Company capitalizes costs related to the development of computer software for internal use and is included in capitalized software development costs within property and equipment, net. Depreciation and amortization expense was approximately $3.5 million and $1.9 million for the three months ended March 31, 2020 and 2019, respectively.

Intangible Assets and Goodwill

Intangible Assets and Goodwill	3 Months Ended
	Mar. 31, 2020
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible Assets and Goodwill	6. Intangible Assets and Goodwill Intangibles, net consisted of the following (in thousands): As of March 31, 2020 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortization Period Developed technology $ 3,046 $ (1,870 ) $ 1,176 2-3 years December 31, 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortization Period Developed technology $ 3,046 $ (1,611 ) $ 1,435 2-3 years Intangible amortization expense was approximately $0.2 million and $0.2 million for the three months ended March 31, 2020 and 2019, respectively. Amortization of developed technology is included in cost of revenue on the Company’s condensed consolidated statement of operations. As of March 31, 2020, future amortization expense by year is expected to be as follows (in thousands): Amount Remainder of 2020 $ 421 2021 497 2022 258 Total $ 1,176 The changes in the carrying amount of goodwill were as follows (in thousands): Amount Balance as of December 31, 2019 $ 9,058 Foreign currency translation adjustments (167 ) Balance as of March 31, 2020 $ 8,891

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	7. Commitments and Contingencies Non-cancelable Material Commitments —In January 2020, the Company entered into a cloud hosting agreement for a total purchase commitment of $21.0 million, payable over the three years following the date of the applicable agreement. 401(k) Plan —The Company sponsors a 401(k) defined contribution plan covering all eligible US employees. Contributions to the 401(k) plan are discretionary. The Company did not make any matching contributions to the 401(k) plan for the year ended December 31, 2019 and the three months ended March 31, 2020. Legal Matters —The Company is involved from time to time in various claims and legal actions arising in the ordinary course of business. While it is not feasible to predict or determine the ultimate outcome of these matters, the Company believes that none of its current legal proceedings will have a material adverse effect on its financial position or results of operations. Indemnification —The Company enters into indemnification provisions under some agreements with other parties in the ordinary course of business, including business partners, investors, contractors, customers, and the Company’s officers, directors and certain employees. The Company has agreed to indemnify and defend the indemnified party claims and related losses suffered or incurred by the indemnified party from actual or threatened third-party claim because of the Company’s activities or non-compliance with certain representations and warranties made by the Company. It is not possible to determine the maximum potential loss under these indemnification provisions due to the Company’s limited history of prior indemnification claims and the unique facts and circumstances involved in each particular provision. To date, losses recorded in the Company’s condensed consolidated statements of operations in connection with the indemnification provisions have not been material.

Leases

Leases	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Leases	8. Leases The Company has entered into various noncancelable operating leases for its facilities expiring between fiscal 2020 and 2025. Certain lease agreements contain an option for the Company to renew a lease for a term of up to five years or an option to terminate a lease early within three years. The Company considers these options, which may be elected at the Company’s sole discretion, in determining the lease term on a lease-by-lease basis. Lease expense for these leases is recognized on a straight-line basis over the lease term, with variable lease payments recognized in the period those payments are incurred. The components of lease cost recognized within the Company’s condensed consolidated statements of operations were as follows (in thousands): Three Months Ended March 31, 2020 Operating lease cost (1) $ 3,960 Variable lease cost (2) — Short-term lease cost 899 Three Months Ended March 31, 2019 Operating lease cost (1) $ 2,969 Variable lease cost (2) 3 Short-term lease cost 636 1) Includes non-cash lease expense of $3.2 million and $2.3 million for the three months ended March 31, 2020 and 2019, respectively. 2) Primarily related to Consumer Price Index adjustments, common area maintenance and property tax. Supplemental cash flow information and non-cash activity related to the Company’s operating leases are as follows (in thousands): Three Months Ended March 31, 2020 Cash paid for amounts included in measurement of lease liabilities $ 3,134 Operating lease assets obtained in exchange for new lease liabilities 1,862 Three Months Ended March 31, 2019 Cash paid for amounts included in measurement of lease liabilities $ 2,996 Operating lease assets obtained in exchange for new lease liabilities — Maturities of lease liabilities by fiscal year for the Company’s operating leases are as follows (in thousands): Amount Remainder of 2020 $ 11,695 2021 17,194 2022 16,994 2023 14,820 2024 2,572 2025 and beyond 2,172 Total lease payments $ 65,447 Less: imputed interest (5,969 ) Present value of lease liabilities $ 59,478 Weighted average remaining lease term and discount rate for the Company’s operating leases are as follows: March 31, 2020 Weighted average remaining lease term (years) 3.82 Weighted average discount rate 4.98 %

Revenue

Revenue	3 Months Ended
	Mar. 31, 2020
Revenue From Contract With Customer [Abstract]
Revenue	9. Revenue Geographical Information Revenue by location is determined by the billing address for the customer. The following table sets forth revenue by geographic area (in thousands): Three Months Ended March 31, 2020 2019 North America $ 99,382 $ 53,238 International 31,866 16,812 Total $ 131,248 $ 70,050 Deferred Revenue and Remaining Performance Obligations Certain of the Company’s customers pay in advance of satisfaction of performance obligations and other customers with monthly contract terms are billed in arrears on a monthly basis. The Company records contract liabilities to deferred revenue when customers are billed or when the Company receives customer payments in advance of the performance obligations being satisfied on the Company’s contracts. Revenue recognized during the three months ended March 31, 2020 and 2019, that was included in the deferred revenue balances at the beginning of each such period was $68.1 million and $31.3 million, respectively. Remaining performance obligations represent the aggregate amount of the transaction price in contracts allocated to performance obligations not delivered, or partially undelivered, as of the end of the reporting period. Remaining performance obligations include unearned revenue, multi-year contracts with future installment payments and certain unfulfilled orders against accepted customer contracts at the end of any given period. As of March 31, 2020 and December 31, 2019, the aggregate transaction price allocated to remaining performance obligations was $256.1 million and $243.8 million, respectively. There is uncertainty in the timing of revenues associated with the Company’s drawdown contracts, as future revenue can often vary significantly from past revenue. However, the Company expects to recognize substantially all of the remaining performance obligations over the next 24 months. Accounts Receivable Accounts receivable deemed uncollectible are charged against the allowance for credit losses when identified. During the three months ended March 31, 2020, the Company charged $0.2 million, of accounts receivable deemed uncollectible against the allowance for credit losses. The Company did not charge any accounts receivable deemed uncollectible against the allowance for credit losses during the three months ended March 31, 2019. Unbilled accounts receivable represents revenue recognized on contracts for which billings have not yet been presented to customers because the amounts were earned but not contractually billable as of the balance sheet date. The unbilled accounts receivable balance is due within one year. As of March 31, 2020, and December 31, 2019, unbilled accounts receivable of approximately $16.4 million and $14.4 million, respectively, was included in accounts receivable on the Company’s condensed consolidated balance sheets. Deferred Contract Costs Sales commissions earned by the Company’s sales force are considered incremental and recoverable costs of obtaining a contract with a customer. These costs are deferred and then amortized over a period of benefit which is determined to be four years. Amounts expected to be recognized within one year of the balance sheet date are recorded as deferred contract costs, current; the remaining portion is recorded as deferred contract costs, non-current, in the condensed consolidated balance sheets. Deferred contract costs on the Company’s condensed consolidated balance sheets were $28.2 million and $25.8 million as of March 31, 2020 and December 31, 2019, respectively. Amortization expense was $2.2 million and $1.0 million for the three months ended March 31, 2020 and 2019. The following table represents a rollforward of the Company’s deferred contract costs (in thousands): Amount Balance as of December 31, 2019 $ 25,755 Additions to deferred contract costs 4,619 Amortization of deferred contract costs (2,185 ) Balance as of March 31, 2020 $ 28,189

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Stockholders' Equity	10. Stockholders’ Equity Class A and Class B Common Stock The Company has two classes of common stock, Class A and Class B. The rights of the holders of Class A and Class B common stock are identical, except with respect to voting and conversion. Each share of Class A common stock is entitled to one vote per share and each share of Class B common stock is entitled to ten votes per share. Shares of Class B common stock may be converted into Class A common stock at any time at the option of the stockholder, and are automatically converted upon the sale or transfer to Class A common stock, subject to certain limited exceptions. During the three months ended March 31, 2020, 87,517,942 shares of Class B common stock were converted into Class A common stock. As of March 31, 2020, the Company had authorized 2,000,000,000 shares of Class A common stock and 310,000,000 shares of Class B common stock, each at a par value per share of $0.00001, of which 153,495,803 shares of Class A common stock and 145,238,917 shares of Class B common stock were issued and outstanding. Equity Incentive Plans The Company has two equity incentive plans, the 2012 equity incentive plan (the “2012 Plan”) and the 2019 equity incentive plan (the “2019 Plan”). In connection with the IPO, the Company ceased granting awards under the 2012 Plan, and all shares that remained available for issuance under the 2012 Plan at that time were transferred to the 2019 Plan. Stock Options The following table summarizes the Company’s stock option activity: Number Of Options Outstanding Weighted- Average Exercise Price Weighted- Average Remaining Contractual Life (in Years) Balance—December 31, 2019 36,384,767 $ 2.96 7.6 Options granted 14,600 $ 41.19 Options exercised (2,347,770 ) $ 1.20 Options forfeited (180,499 ) $ 4.58 Balance—March 31, 2020 33,871,098 $ 3.09 7.4 Exercisable—March 31, 2020 21,804,073 $ 2.30 6.9 As of March 31, 2020, there were 35,300 shares of Class A common stock and 33,835,798 shares of Class B common stock issuable upon the exercise of options outstanding. As of December 31, 2019, there were 20,700 shares of Class A common stock and 36,364,067 shares of Class B common stock issuable upon the exercise of options outstanding. Total compensation cost related to unvested options not yet recognized was approximately $83.1 The weighted average grant-date fair value of options granted during the three months ended March 31, 2020 and March 31, 2019, was $16.55 and $3.34, respectively. The Company received approximately $2.8 million and $1.8 million in cash proceeds from options exercised during the three months ended March 31, 2020 and March 31, 2019, respectively. The intrinsic value of options exercised during the three months ended March 31, 2020 and March 31, 2019 was approximately $86.5 million and $16.8 million, respectively. The aggregate fair value of options vested during the three months ended March 31, 2020 and 2019 was $3.8 million and $1.8 million, respectively. Common stock purchased pursuant to an early exercise of stock options is not deemed to be outstanding for accounting purposes until those shares vest. The consideration received for an exercise of an option is considered to be a deposit of the exercise price and the related dollar amount is recorded as a liability. The shares issued upon the early exercise of these unvested stock option awards, which are reflected as exercises in the table above, are considered to be legally issued and outstanding on the date of exercise. Upon termination of service, the Company may repurchase unvested shares acquired through early exercise of stock options at a price equal to the price per share paid upon the exercise of such options. The Company has recorded liabilities related to early exercises of 1,039,500 shares of common stock and 1,239,750 shares of common stock as of March 31, 2020 and December 31, 2019, respectively. Restricted Stock Units The following table summarizes the activity for the Company's unvested RSUs: Shares Weighted-Average Fair Value Balance—December 31, 2019 647,094 $ 36.08 Granted 696,740 $ 43.12 Vested — $ — Forfeited/canceled (27,610 ) $ 38.32 Balance—March 31, 2020 1,316,224 $ 39.76 In November 2019, the Company granted 244,445 restricted shares of Class A common stock, which are subject to service-based vesting conditions over approximately four years. Total compensation cost related to was approximately $56.4 million and $30.4 million as of March 31, 2020 and December 31, 2019, respectively. The weighted average period over which this compensation cost related to unvested RSUs and restricted shares will be recognized is 3.8 years and 3.9 years as of March 31, 2020 and December 31, 2019, respectively Employee Stock Purchase Plan In September 2019, the Board adopted and approved the 2019 Employee Stock Purchase Plan (the “ESPP”), which became effective on the date of the final prospectus for the Company’s IPO (the “Final Prospectus”). The ESPP initially reserved and authorized the issuance of up to a total of 6,725,000 shares of Class A common stock to participating employees, subject to periodic automatic increases in the amount of shares reserved under the ESPP. As of March 31, 2020, 9,688,869 shares of Class A common stock remain available for grant under the ESPP. The initial offering period began on the date of the Final Prospectus and will end on May 15, 2020. On each purchase date, eligible employees will purchase the shares at a price per share equal to 85% of the lesser of (1) the $27.00 initial public offering price of the Company’s Class A common stock or (2) the fair market value of the Company’s Class A common stock on the purchase date, as defined in the ESPP. The Company recognized $1.0 million of stock-based compensation expense related to the ESPP during the three months ended March 31, 2020, beginning upon the IPO in September 2019. As of March 31, 2020, $6.4 million has been withheld on behalf of employees for a future purchase under the ESPP due to the timing of payroll deductions. There were no purchases for the three months ended March 31, 2020 related to the ESPP. Stock-Based Compensation The Company uses the Black-Scholes option-pricing model to estimate the fair value of stock options on the date of grant. The Company recognizes and measures compensation expense for all stock-based payment awards granted to employees, directors, and nonemployees based on the fair value of the awards on the date of grant. The determination of the grant date fair value using an option-pricing model is affected by the estimated fair value of the Company’s common stock as well as assumptions regarding a number of other complex and subjective variables. These variables include expected stock price volatility over the expected term of the award, actual and projected employee stock option exercise behaviors, the risk-free interest rate for the expected term of the award and expected dividends. The fair value of RSUs is determined by the closing price on the date of grant of the Company’s Class A common stock, as reported on The Nasdaq Global Select Market. The Company estimates the fair value of the rights to acquire stock under the ESPP using the Black-Scholes option pricing model. Stock-based compensation is recognized on a straight-line basis over the requisite service period and account for forfeitures as they occur. Stock-based compensation expense was included in the condensed consolidated statement of operations as follows (in thousands): Three Months Ended March 31, 2020 2019 Cost of revenue $ 231 $ 99 Research and development 5,847 786 Sales and marketing 3,074 729 General and administrative 2,908 831 Stock-based compensation, net of amounts capitalized 12,060 2,445 Capitalized stock-based compensation expense 103 52 Total stock-based compensation expense $ 12,163 $ 2,497

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	11. Income Taxes The Company has an effective tax rate of 2.9% and (0.6)% for the three months ended March 31, 2020 and 2019. The Company has incurred U.S. operating losses and has minimal profits in its foreign jurisdictions. The Company has evaluated the available evidence supporting the realization of its deferred tax assets, including the amount and timing of future taxable income, and has determined that it is more likely than not that its net deferred tax assets will not be realized in the U.S. Due to uncertainties surrounding the realization of the deferred tax assets, the Company maintains a full valuation allowance against substantially all of its net deferred tax assets. When the Company determines that it will be able to realize some portion or all of its deferred tax assets, an adjustment to its valuation allowance on its deferred tax assets would have the effect of increasing net income in the period such determination is made. The Company has applied ASC 740, Income Taxes On March 27, 2020 the Coronavirus Aid, Relief, and Economic Security Act ("CARES Act") was enacted and signed into law. The CARES Act makes changes to the U.S. tax code, including, but not limited to: (1) modifications to the business interest deduction limitation for tax years 2019 and 2020; (2) a technical correction of the recovery period of qualified improvement property from 39 to 15 years; and (3) a repeal of the 80% taxable income limitation on the deduction of net operating losses ("NOLs") for tax years beginning before January 1, 2021 as well as a five-year carryback period allowed for NOLs generated in tax years beginning after December 31, 2017 and before January 1, 2021. Under ASC 740, the effects of new legislation would need to be recognized in the period of enactment. Therefore, the effects of the CARES Act would need to be accounted for in the quarter that includes March 27, 2020. The Company evaluated the provisions of the CARES Act and determined that there was no material impact as of the quarter ended March 31, 2020. The Company will continue to assess the potential income tax impact and monitor any updates to the legislation.

Net (Loss) Income Per Share

Net (Loss) Income Per Share	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Net (Loss) Income Per Share	12. Net Income (Loss) Per Share Basic and diluted net income (loss) per common share is presented in conformity with the two-class method required for participating securities. Immediately prior to the consummation of the Company’s IPO in September 2019, all outstanding shares of convertible preferred stock and common stock were converted to Class B common stock. As a result, Class A and Class B common stock are the only outstanding equity in the Company as of March 31, 2020. Basic and diluted net income (loss) per share is computed using the weighted-average number of common shares outstanding during the period. The undistributed earnings are allocated based on the contractual participation rights of the Class A and Class B common shares as if the earnings for the year have been distributed. As the liquidation and dividend rights are identical, the undistributed earnings are allocated on a proportionate basis. Further, as the conversion of Class B common stock is assumed in the computation of the diluted net income (loss) per share of Class A common stock, the undistributed earnings are equal to net income (loss) for that computation. The following table presents the calculation of basic and diluted net income (loss) per share (in thousands, except per share data): Three Months Ended March 31, 2020 2019 Basic net income (loss) per share: Class A Class B Numerator: Net income (loss) $ 1,852 $ 4,627 $ (9,491 ) Denominator: Weighted average shares used in calculating net income (loss) per share, basic 84,434 211,021 77,061 Basic net income (loss) per share $ 0.02 $ 0.02 $ (0.12 ) Diluted net income (loss) per share: Numerator: Allocation of distributed income (loss) for basic computation $ 1,852 $ 4,627 $ (9,491 ) Reallocation of undistributed income as a result of conversion of Class B to Class A shares 4,627 — — Allocation of undistributed income (loss) $ 6,479 $ 4,627 $ (9,491 ) Denominator: Number of shares used in basic calculation 84,434 211,021 77,061 Weighted average effect of diluted securities: Conversion of Class B to Class A common shares outstanding 211,021 — — Employee stock options 30,708 — — Employee stock purchase plan 129 — — Unvested early exercises 1,139 — — Restricted Stock Units 126 — — Unvested restricted stock in connection with acquisition 244 — — Number of shares used in diluted calculation 327,801 211,021 77,061 Diluted net income (loss) per share $ 0.02 $ 0.02 $ (0.12 ) Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows (in thousands): As of March 31, 2020 2019 Convertible Preferred Stock — 179,814 Shares subject to outstanding stock options and restricted stock units 4,352 36,672 Unvested early exercised stock options — 2,178 Shares subject to the employee stock purchase plan 217 — Total 4,569 218,664

Basis of Presentation and Sum_2

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2020
Accounting Policies [Abstract]
Unaudited Interim Condensed Consolidated Financial Information	Unaudited Interim Condensed Consolidated Financial Information The unaudited condensed consolidated financial statements include the accounts of Datadog, Inc. and its wholly owned subsidiaries, and have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and following the requirements of the Securities and Exchange Commission (“SEC”) for interim reporting. As permitted under those rules, certain footnotes or other financial information that are normally required by GAAP can be condensed or omitted. These financial statements have been prepared on the same basis as the Company’s annual financial statements and, in the opinion of management, reflect all adjustments, consisting only of normal recurring adjustments, which are necessary for the fair statement of the Company’s financial information. These interim results are not necessarily indicative of the results to be expected for the fiscal year ending December 31, 2020 or for any other interim period or for any other future year. The accompanying unaudited condensed consolidated financial statements and related financial information should be read in conjunction with the audited consolidated financial statements and the related notes contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2019, as filed with the SEC on February 25, 2020 (the “Annual Report”).
Basis of Presentation	Basis of Presentation The accompanying condensed consolidated financial statements have been prepared in accordance with GAAP.
Principles of Consolidation	Principles of Consolidation The condensed consolidated financial statements include the accounts of Datadog, Inc. and its wholly owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation.
Stock Split	Stock Split On September 6, 2019, the Board and stockholders approved an amended and restated certificate of incorporation of the Company effecting a 3-for-1 stock split of the Company’s issued and outstanding shares of common stock and convertible preferred stock, and an increase to the authorized shares of the Company’s common stock and convertible preferred stock to 380,000,000 shares and 179,814,912 shares, respectively. The split was effected on September 6, 2019 and without any change in the par value per share. All information related to the Company’s common stock, convertible preferred stock and stock awards has been retroactively adjusted to give effect to the 3-for-1 stock split on September 6, 2019.
Use of Estimates	Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Such estimates include the fair value of marketable securities, the allowance for credit losses, the fair value of acquired assets and assumed liabilities from business combinations, useful lives of property, equipment, software, and finite lived intangibles, stock-based compensation including the determination of the fair value of the Company’s stock prior to its initial public offering (“IPO”), fair value of common stock and redeemable convertible preferred stock prior to the IPO, valuation of long-lived assets and their recoverability, including goodwill, estimated expected period of benefit for deferred contract costs, the incremental borrowing rate for operating leases, realization of deferred tax assets and uncertain tax positions, revenue recognition and the allocation of overhead costs between cost of revenue and operating expenses. The Company bases its estimates on historical experience and also on assumptions that management considers reasonable. The Company assesses these estimates on a regular basis; however, actual results could materially differ from these estimates.
Accounting Pronouncements Recently Adopted	Accounting Pronouncements Recently Adopted In June 2016, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2016-13, Financial Instruments— Credit Losses (Topic 326) Measurement of Credit Losses on Financial Instruments In August 2018, the FASB issued ASU No. 2018-15, Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract
Accounting Pronouncements Not Yet Adopted	Accounting Pronouncements Not Yet Adopted In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes, which aims to reduce complexity in accounting standards by improving certain areas of GAAP without compromising information provided to users of financial statements. This guidance will be effective for the Company beginning January 1, 2021. The Company is currently evaluating the impact of the adoption of this standard on its condensed consolidated financial statements.

Marketable Securities (Tables)

Marketable Securities (Tables)	3 Months Ended
	Mar. 31, 2020
Investments Debt And Equity Securities [Abstract]
Summary of Available-for-Sale Marketable Securities	The following is a summary of available-for-sale marketable securities, excluding those securities classified within cash and cash equivalents, on the condensed consolidated balance sheets (in thousands): March 31, 2020 Amortized Cost Unrealized Gain Unrealized Losses Fair Value Commercial debt securities $ 321,534 $ 60 $ (2,096 ) $ 319,498 Certificates of deposit 39,865 54 — 39,919 U.S. government agencies 14,914 58 — 14,972 U.S. government treasury securities 106,033 1,023 — 107,056 Commercial paper 118,908 31 — 118,939 Marketable securities $ 601,254 $ 1,226 $ (2,096 ) $ 600,384 December 31, 2019 Amortized Cost Unrealized Gain Unrealized Losses Fair Value Commercial debt securities $ 80,376 $ 46 $ (5 ) $ 80,417 U.S. government treasury securities 72,467 10 (4 ) 72,473 Commercial paper 23,784 — — 23,784 Marketable securities $ 176,627 $ 56 $ (9 ) $ 176,674
Summary of Fair Values of Available-for-Sale Marketable Securities, by Remaining Contractual Maturity	As of March 31, 2020, the fair values of available-for-sale marketable securities, by remaining contractual maturity, were as follows (in thousands): Due within one year $ 478,459 Due in one year through five years 121,925 Total $ 600,384

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The following tables present information about the Company’s financial assets and liabilities that have been measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019, and indicate the fair value hierarchy of the valuation inputs utilized to determine such fair value (in thousands): Fair Value Measurement as of March 31, 2020 Level 1 Level 2 Level 3 Total Financial Assets: Cash equivalents: Money market funds $ 138,733 $ — $ — $ 138,733 Commercial paper — 27,478 — 27,478 U.S. government treasury securities — 12,000 — 12,000 Certificates of deposit — 3,202 — 3,202 Marketable Securities: Corporate debt securities — 319,499 — 319,499 U.S. government agencies — 14,972 — 14,972 Certificates of deposit — 39,919 — 39,919 U.S. government treasury securities — 107,054 — 107,054 Commercial paper — 118,940 — 118,940 Total financial assets $ 138,733 $ 643,064 $ — $ 781,797 Fair Value Measurement as of December 31, 2019 Level 1 Level 2 Level 3 Total Financial Assets: Cash equivalents: Money market funds $ 588,762 $ — $ — $ 588,762 Marketable Securities: Corporate debt securities — 80,417 — 80,417 U.S. government treasury securities — 72,473 — 72,473 Commercial paper — 23,784 — 23,784 Total financial assets $ 588,762 $ 176,674 $ — $ 765,436

Property and Equipment, Net (Ta

Property and Equipment, Net (Tables)	3 Months Ended
	Mar. 31, 2020
Property Plant And Equipment [Abstract]
Components of Property and Equipment, Net	Property and equipment, net consisted of the following (in thousands): March 31, 2020 December 31, 2019 Computers and equipment $ 8,667 $ 7,536 Furniture and fixtures 4,939 4,804 Leasehold improvements 16,487 16,517 Capitalized software development costs 28,150 24,630 Total property and equipment $ 58,243 $ 53,487 Less: accumulated depreciation and amortization (24,159 ) (20,738 ) Total property and equipment, net $ 34,084 $ 32,749

Intangible Assets and Goodwill

Intangible Assets and Goodwill (Tables)	3 Months Ended
	Mar. 31, 2020
Business Combinations [Abstract]
Schedule of Intangibles, Net	Intangibles, net consisted of the following (in thousands): As of March 31, 2020 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortization Period Developed technology $ 3,046 $ (1,870 ) $ 1,176 2-3 years December 31, 2019 Gross Carrying Amount Accumulated Amortization Net Carrying Amount Amortization Period Developed technology $ 3,046 $ (1,611 ) $ 1,435 2-3 years
Schedule of Future Amortization Expense	As of March 31, 2020, future amortization expense by year is expected to be as follows (in thousands): Amount Remainder of 2020 $ 421 2021 497 2022 258 Total $ 1,176
Schedule of Changes in Carrying Amount of Goodwill	The changes in the carrying amount of goodwill were as follows (in thousands): Amount Balance as of December 31, 2019 $ 9,058 Foreign currency translation adjustments (167 ) Balance as of March 31, 2020 $ 8,891

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Summary of Components of Lease Cost Recognized	The components of lease cost recognized within the Company’s condensed consolidated statements of operations were as follows (in thousands): Three Months Ended March 31, 2020 Operating lease cost (1) $ 3,960 Variable lease cost (2) — Short-term lease cost 899 Three Months Ended March 31, 2019 Operating lease cost (1) $ 2,969 Variable lease cost (2) 3 Short-term lease cost 636 1) Includes non-cash lease expense of $3.2 million and $2.3 million for the three months ended March 31, 2020 and 2019, respectively. 2) Primarily related to Consumer Price Index adjustments, common area maintenance and property tax.
Summary of Supplemental Cash Flow Information and Non-cash Activity	Supplemental cash flow information and non-cash activity related to the Company’s operating leases are as follows (in thousands): Three Months Ended March 31, 2020 Cash paid for amounts included in measurement of lease liabilities $ 3,134 Operating lease assets obtained in exchange for new lease liabilities 1,862 Three Months Ended March 31, 2019 Cash paid for amounts included in measurement of lease liabilities $ 2,996 Operating lease assets obtained in exchange for new lease liabilities —
Summary of Maturities of Lease Liabilities	Maturities of lease liabilities by fiscal year for the Company’s operating leases are as follows (in thousands): Amount Remainder of 2020 $ 11,695 2021 17,194 2022 16,994 2023 14,820 2024 2,572 2025 and beyond 2,172 Total lease payments $ 65,447 Less: imputed interest (5,969 ) Present value of lease liabilities $ 59,478
Summary of Weighted Average Remaining Lease Term and Discount Rate	Weighted average remaining lease term and discount rate for the Company’s operating leases are as follows: March 31, 2020 Weighted average remaining lease term (years) 3.82 Weighted average discount rate 4.98 %

Revenue (Tables)

Revenue (Tables)	3 Months Ended
	Mar. 31, 2020
Revenue From Contract With Customer [Abstract]
Schedule of Revenue by Geographic Area	Revenue by location is determined by the billing address for the customer. The following table sets forth revenue by geographic area (in thousands): Three Months Ended March 31, 2020 2019 North America $ 99,382 $ 53,238 International 31,866 16,812 Total $ 131,248 $ 70,050
Schedule of Deferred Contract Costs	The following table represents a rollforward of the Company’s deferred contract costs (in thousands): Amount Balance as of December 31, 2019 $ 25,755 Additions to deferred contract costs 4,619 Amortization of deferred contract costs (2,185 ) Balance as of March 31, 2020 $ 28,189

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Summary of Stock Option Activity	The following table summarizes the Company’s stock option activity: Number Of Options Outstanding Weighted- Average Exercise Price Weighted- Average Remaining Contractual Life (in Years) Balance—December 31, 2019 36,384,767 $ 2.96 7.6 Options granted 14,600 $ 41.19 Options exercised (2,347,770 ) $ 1.20 Options forfeited (180,499 ) $ 4.58 Balance—March 31, 2020 33,871,098 $ 3.09 7.4 Exercisable—March 31, 2020 21,804,073 $ 2.30 6.9
Summary of Activity for Unvested RSUs	The following table summarizes the activity for the Company's unvested RSUs: Shares Weighted-Average Fair Value Balance—December 31, 2019 647,094 $ 36.08 Granted 696,740 $ 43.12 Vested — $ — Forfeited/canceled (27,610 ) $ 38.32 Balance—March 31, 2020 1,316,224 $ 39.76
Summary of Stock-based Compensation Expense	Stock-based compensation expense was included in the condensed consolidated statement of operations as follows (in thousands): Three Months Ended March 31, 2020 2019 Cost of revenue $ 231 $ 99 Research and development 5,847 786 Sales and marketing 3,074 729 General and administrative 2,908 831 Stock-based compensation, net of amounts capitalized 12,060 2,445 Capitalized stock-based compensation expense 103 52 Total stock-based compensation expense $ 12,163 $ 2,497

Net (Loss) Income Per Share (Ta

Net (Loss) Income Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Schedule of Calculation of Basic and Diluted Net Loss Per Share	The following table presents the calculation of basic and diluted net income (loss) per share (in thousands, except per share data): Three Months Ended March 31, 2020 2019 Basic net income (loss) per share: Class A Class B Numerator: Net income (loss) $ 1,852 $ 4,627 $ (9,491 ) Denominator: Weighted average shares used in calculating net income (loss) per share, basic 84,434 211,021 77,061 Basic net income (loss) per share $ 0.02 $ 0.02 $ (0.12 ) Diluted net income (loss) per share: Numerator: Allocation of distributed income (loss) for basic computation $ 1,852 $ 4,627 $ (9,491 ) Reallocation of undistributed income as a result of conversion of Class B to Class A shares 4,627 — — Allocation of undistributed income (loss) $ 6,479 $ 4,627 $ (9,491 ) Denominator: Number of shares used in basic calculation 84,434 211,021 77,061 Weighted average effect of diluted securities: Conversion of Class B to Class A common shares outstanding 211,021 — — Employee stock options 30,708 — — Employee stock purchase plan 129 — — Unvested early exercises 1,139 — — Restricted Stock Units 126 — — Unvested restricted stock in connection with acquisition 244 — — Number of shares used in diluted calculation 327,801 211,021 77,061 Diluted net income (loss) per share $ 0.02 $ 0.02 $ (0.12 )
Schedule of Potentially Dilutive Securities not Included in Diluted Per Share Calculations	Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows (in thousands): As of March 31, 2020 2019 Convertible Preferred Stock — 179,814 Shares subject to outstanding stock options and restricted stock units 4,352 36,672 Unvested early exercised stock options — 2,178 Shares subject to the employee stock purchase plan 217 — Total 4,569 218,664

Organization and Description _2

Organization and Description of Business - Additional Information (Details)	3 Months Ended
	Mar. 31, 2020
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Date of Incorporation	Jun. 4, 2010

Basis of Presentation and Sum_3

Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)	Sep. 06, 2019shares
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Stock split, conversion ratio	0.333
Common stock, shares authorized	380,000,000
Convertible Preferred Stock
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Convertible preferred stock, shares authorized	179,814,912

Marketable Securities - Summary

Marketable Securities - Summary of Available-for-sale Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	$ 601,254	$ 176,627
Marketable securities, Unrealized Gain	1,226	56
Marketable securities, Unrealized Losses	(2,096)	(9)
Marketable securities, Fair Value	600,384	176,674
Commercial Debt Securities
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	321,534	80,376
Marketable securities, Unrealized Gain	60	46
Marketable securities, Unrealized Losses	(2,096)	(5)
Marketable securities, Fair Value	319,498	80,417
Certificates of Deposit
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	39,865
Marketable securities, Unrealized Gain	54
Marketable securities, Fair Value	39,919
US Government Agencies
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	14,914
Marketable securities, Unrealized Gain	58
Marketable securities, Fair Value	14,972
U.S. Government Treasury Securities
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	106,033	72,467
Marketable securities, Unrealized Gain	1,023	10
Marketable securities, Unrealized Losses		(4)
Marketable securities, Fair Value	107,056	72,473
Commercial Paper
Marketable Securities [Line Items]
Marketable securities, Amortized Cost	118,908	23,784
Marketable securities, Unrealized Gain	31
Marketable securities, Fair Value	$ 118,939	$ 23,784

Marketable Securities - Summa_2

Marketable Securities - Summary of Fair Values of Available-for-Sale Marketable Securities, by Remaining Contractual Maturity (Details) $ in Thousands	Mar. 31, 2020USD ($)
Investments Debt And Equity Securities [Abstract]
Due within one year	$ 478,459
Due in one year through five years	121,925
Total	$ 600,384

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financial Assets:
Marketable securities	$ 600,384	$ 176,674
Fair Value, Recurring
Financial Assets:
Total financial assets	781,797	765,436
Fair Value, Recurring | Money Market Funds
Financial Assets:
Cash equivalents	138,733	588,762
Fair Value, Recurring | Commercial Paper
Financial Assets:
Cash equivalents	27,478
Marketable securities	118,940	23,784
Fair Value, Recurring | U.S. Government Treasury Securities
Financial Assets:
Cash equivalents	12,000
Marketable securities	107,054	72,473
Fair Value, Recurring | Corporate Debt Securities
Financial Assets:
Marketable securities	319,499	80,417
Fair Value, Recurring | Certificates of Deposit
Financial Assets:
Cash equivalents	3,202
Marketable securities	39,919
Fair Value, Recurring | US Government Agencies
Financial Assets:
Marketable securities	14,972
Fair Value, Recurring | Level 1
Financial Assets:
Total financial assets	138,733	588,762
Fair Value, Recurring | Level 1 | Money Market Funds
Financial Assets:
Cash equivalents	138,733	588,762
Fair Value, Recurring | Level 2
Financial Assets:
Total financial assets	643,064	176,674
Fair Value, Recurring | Level 2 | Commercial Paper
Financial Assets:
Cash equivalents	27,478
Marketable securities	118,940	23,784
Fair Value, Recurring | Level 2 | U.S. Government Treasury Securities
Financial Assets:
Cash equivalents	12,000
Marketable securities	107,054	72,473
Fair Value, Recurring | Level 2 | Corporate Debt Securities
Financial Assets:
Marketable securities	319,499	$ 80,417
Fair Value, Recurring | Level 2 | Certificates of Deposit
Financial Assets:
Cash equivalents	3,202
Marketable securities	39,919
Fair Value, Recurring | Level 2 | US Government Agencies
Financial Assets:
Marketable securities	$ 14,972

Property and Equipment, Net - C

Property and Equipment, Net - Components of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Property Plant And Equipment [Line Items]
Total property and equipment	$ 58,243	$ 53,487
Less: accumulated depreciation and amortization	(24,159)	(20,738)
Total property and equipment, net	34,084	32,749
Computers and Equipment
Property Plant And Equipment [Line Items]
Total property and equipment	8,667	7,536
Furniture and Fixtures
Property Plant And Equipment [Line Items]
Total property and equipment	4,939	4,804
Leasehold Improvements
Property Plant And Equipment [Line Items]
Total property and equipment	16,487	16,517
Capitalized Software Development Costs
Property Plant And Equipment [Line Items]
Total property and equipment	$ 28,150	$ 24,630

Property and Equipment, Net - A

Property and Equipment, Net - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Property Plant And Equipment [Abstract]
Depreciation and amortization expense	$ 3.5	$ 1.9

Intangible Assets and Goodwil_2

Intangible Assets and Goodwill - Schedule of Intangibles, Net (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]
Net Carrying Amount	$ 1,176	$ 1,435
Developed Technology
Finite Lived Intangible Assets [Line Items]
Gross Carrying Amount	3,046	3,046
Accumulated Amortization	(1,870)	(1,611)
Net Carrying Amount	$ 1,176	$ 1,435
Developed Technology | Minimum
Finite Lived Intangible Assets [Line Items]
Amortization Period	2 years	2 years
Developed Technology | Maximum
Finite Lived Intangible Assets [Line Items]
Amortization Period	3 years	3 years

Intangible Assets and Goodwil_3

Intangible Assets and Goodwill - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Intangible amortization expense	$ 0.2	$ 0.2

Intangible Assets and Goodwil_4

Intangible Assets and Goodwill - Schedule of Future Amortization Expense (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Goodwill And Intangible Assets Disclosure [Abstract]
Remainder of 2020	$ 421
2021	497
2022	258
Net Carrying Amount	$ 1,176	$ 1,435

Intangible Assets and Goodwil_5

Intangible Assets and Goodwill - Schedule of Changes in Carrying Amount of Goodwill (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Balance as of December 31, 2019	$ 9,058
Foreign currency translation adjustments	(167)
Balance as of March 31, 2020	$ 8,891

Commitments and Contingencies -

Commitments and Contingencies - Additional Information (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020USD ($)
Commitments And Contingencies Disclosure [Abstract]
Total purchase commitment	$ 21
Purchase commitment payable period	3 years

Leases - Additional Information

Leases - Additional Information (Details)	3 Months Ended
	Mar. 31, 2020
Lessee Lease Description [Line Items]
Operating lease, option to terminate	option to terminate a lease early within three years
Lessee, Operating Lease, Existence of Option to Terminate [true false]	true
Minimum
Lessee Lease Description [Line Items]
Noncancelable operating lease expiration period	2020
Maximum
Lessee Lease Description [Line Items]
Noncancelable operating lease expiration period	2025
Operating lease, renewal term	5 years
Operating lease, termination term	3 years

Leases - Summary of Components

Leases - Summary of Components of Lease Cost Recognized (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease cost	$ 3,960	$ 2,969
Variable lease cost		3
Short-term lease cost	$ 899	$ 636

Leases - Summary of Component_2

Leases - Summary of Components of Lease Cost Recognized (Parenthetical) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Operating lease, non-cash lease expense	$ 3.2	$ 2.3

Leases - Summary of Supplementa

Leases - Summary of Supplemental Cash Flow Information and Non-cash Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Leases [Abstract]
Cash paid for amounts included in measurement of lease liabilities	$ 3,134	$ 2,996
Operating lease assets obtained in exchange for new lease liabilities	$ 1,862

Leases - Summary of Maturities

Leases - Summary of Maturities of Lease Liabilities (Details) $ in Thousands	Mar. 31, 2020USD ($)
Leases [Abstract]
Remainder of 2020	$ 11,695
2021	17,194
2022	16,994
2023	14,820
2024	2,572
2025 and beyond	2,172
Total lease payments	65,447
Less: imputed interest	(5,969)
Present value of lease liabilities	$ 59,478

Leases - Summary of Weighted Av

Leases - Summary of Weighted Average Remaining Lease Term and Discount Rate (Details)	Mar. 31, 2020
Leases [Abstract]
Weighted average remaining lease term (years)	3 years 9 months 25 days
Weighted average discount rate	4.98%

Revenue - Schedule of Revenue b

Revenue - Schedule of Revenue by Geographic Area (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation Of Revenue [Line Items]
Revenue by geographic area	$ 131,248	$ 70,050
North America
Disaggregation Of Revenue [Line Items]
Revenue by geographic area	99,382	53,238
International
Disaggregation Of Revenue [Line Items]
Revenue by geographic area	$ 31,866	$ 16,812

Revenue - Additional Informatio

Revenue - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Revenue From Contract With Customer [Abstract]
Revenue recognized	$ 68,100,000	$ 31,300,000
Allowance for doubtful accounts receivable deemed uncollectible	200,000	0
Unbilled accounts receivable	$ 16,400,000		$ 14,400,000
Deferred contract costs amortization period	4 years
Deferred contract costs	$ 28,200,000		$ 25,800,000
Amortization expense	$ 2,200,000	$ 1,000,000

Revenue - Additional Informat_2

Revenue - Additional Information (Details 1) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-01-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations		$ 243.8
Remaining performance obligations, expected to recognize period		24 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2020-04-01
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]
Remaining performance obligations	$ 256.1
Remaining performance obligations, expected to recognize period	24 months

Revenue - Schedule of Deferred

Revenue - Schedule of Deferred Contract Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Capitalized Contract Cost [Abstract]
Balance as of December 31, 2019	$ 25,755
Additions to deferred contract costs	4,619	$ 3,390
Amortization of deferred contract costs	(2,185)
Balance as of March 31, 2020	$ 28,189

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended		12 Months Ended
	Nov. 30, 2019	Sep. 30, 2019	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Sep. 06, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares authorized						380,000,000
Stock issuable upon the exercise of options outstanding			33,871,098		36,384,767
Proceeds from exercise of stock options			$ 2,813	$ 1,776
Share-based payment arrangement, expense			12,060	$ 2,445
Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total compensation cost related to unvested awards not yet recognized			$ 83,100		$ 90,500
Weighted average period over compensation cost related to unvested employee awards			2 years 6 months		2 years 8 months 12 days
Weighted average grant-date fair value of options granted			$ 16.55	$ 3.34
Proceeds from exercise of stock options			$ 2,800	$ 1,800
Intrinsic value of options exercised			86,500	16,800
Aggregate fair value of options vested			$ 3,800	$ 1,800
Early exercise of common stock			1,039,500		1,239,750
RSU
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average period over compensation cost related to unvested employee awards			3 years 9 months 18 days		3 years 10 months 24 days
Common stock granted			696,740
Total compensation cost related to unvested awards not yet recognized			$ 56,400		$ 30,400
Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Initial offering period		The initial offering period began on the date of the Final Prospectus and will end on May 15, 2020.
Percentage of purchase the shares at a price per share		85.00%
Share-based payment arrangement, expense			1,000
Amounts withheld on behalf of employees for a future purchase			$ 6,400
Employee Stock Purchase Plan | Initial Public Offering
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Initial public offering price		$ 27
Class B Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, number of shares converted			87,517,942
Common stock, shares authorized			310,000,000		310,000,000
Common stock, par value			$ 0.00001		$ 0.00001
Common stock, shares issued			145,238,917		232,078,452
Common stock, shares outstanding			145,238,917		232,078,452
Stock issuable upon the exercise of options outstanding			33,835,798		36,364,067
Class A Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares authorized			2,000,000,000		2,000,000,000
Common stock, par value			$ 0.00001		$ 0.00001
Common stock, shares issued			153,495,803		64,308,498
Common stock, shares outstanding			153,495,803		64,308,498
Stock issuable upon the exercise of options outstanding			35,300		20,700
Class A Common Stock | Service-based Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock granted	244,445
Service based vesting period	4 years
Class A Common Stock | 2019 Equity Incentive Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for grant			46,421,549
Class A Common Stock | Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for grant			9,688,869
Number of shares authorized to grant award		6,725,000

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Stock Option Activity (Details) - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Number Of Options Outstanding
Beginning balance	36,384,767
Options granted	14,600
Options exercised	(2,347,770)
Options forfeited	(180,499)
Ending balance	33,871,098	36,384,767
Exercisable—March 31, 2020	21,804,073
Weighted-Average Exercise Price
Beginning balance	$ 2.96
Options granted	41.19
Options exercised	1.20
Options forfeited	4.58
Ending balance	3.09	$ 2.96
Exercisable—March 31, 2020	$ 2.30
Weighted-Average Remaining Contractual Life (in Years)
Options outstanding	7 years 4 months 24 days	7 years 7 months 6 days
Options exercisable	6 years 10 months 25 days

Stockholders' Equity - Summar_2

Stockholders' Equity - Summary of Activity for Unvested RSUs (Details) - Restricted Stock Units (RSUs)	3 Months Ended
	Mar. 31, 2020$ / sharesshares
Unvested Shares
Balance—December 31, 2019 | shares	647,094
Granted | shares	696,740
Forfeited/canceled | shares	(27,610)
Balance—March 31, 2020 | shares	1,316,224
Weighted-Average Fair Value
Balance—December 31, 2019 | $ / shares	$ 36.08
Granted | $ / shares	43.12
Forfeited/canceled | $ / shares	38.32
Balance—March 31, 2020 | $ / shares	$ 39.76

Stockholders' Equity - Summar_3

Stockholders' Equity - Summary of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation, net of amounts capitalized	$ 12,060	$ 2,445
Capitalized stock-based compensation expense	103	52
Total stock-based compensation expense	12,163	2,497
Cost of Revenue
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation, net of amounts capitalized	231	99
Research and Development
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation, net of amounts capitalized	5,847	786
Sales and Marketing
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation, net of amounts capitalized	3,074	729
General and Administrative
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Stock-based compensation, net of amounts capitalized	$ 2,908	$ 831

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details)	Mar. 27, 2020	Mar. 31, 2020	Mar. 31, 2019
Income Taxes [Line Items]
Effective tax rate		2.90%	(0.60%)
Net operating loss deductible limitation percentage	80.00%
Net operating losses carryback period	5 years
Maximum
Income Taxes [Line Items]
Property recovery correction period	39 years
Minimum
Income Taxes [Line Items]
Property recovery correction period	15 years

Net (Loss) Income Per Share - S

Net (Loss) Income Per Share - Schedule of Calculation of Basic and Diluted Net (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Basic net income (loss) per share:
Net income (loss)	$ 6,479	$ (9,491)
Weighted average shares used in calculating net income (loss) per share, basic	295,455	77,061
Basic net income (loss) per share	$ 0.02	$ (0.12)
Diluted net income (loss) per share:
Net income (loss) attributable to common stockholders	$ 6,479	$ (9,491)
Allocation of undistributed income (loss)		$ (9,491)
Weighted average shares used in calculating net income (loss) per share, basic	295,455	77,061
Number of shares used in diluted calculation	327,801	77,061
Diluted net income (loss) per share	$ 0.02	$ (0.12)
Class A Common Stock
Basic net income (loss) per share:
Net income (loss)	$ 1,852
Weighted average shares used in calculating net income (loss) per share, basic	84,434
Basic net income (loss) per share	$ 0.02
Diluted net income (loss) per share:
Net income (loss) attributable to common stockholders	$ 1,852
Reallocation of undistributed income as a result of conversion of Class B to Class A shares	4,627
Allocation of undistributed income (loss)	$ 6,479
Weighted average shares used in calculating net income (loss) per share, basic	84,434
Conversion of Class B to Class A common shares outstanding	211,021
Employee stock options	30,708
Employee stock purchase plan	129
Unvested early exercises	1,139
Restricted Stock Units	126
Unvested restricted stock in connection with acquisition	244
Number of shares used in diluted calculation	327,801
Diluted net income (loss) per share	$ 0.02
Class B Common Stock
Basic net income (loss) per share:
Net income (loss)	$ 4,627
Weighted average shares used in calculating net income (loss) per share, basic	211,021
Basic net income (loss) per share	$ 0.02
Diluted net income (loss) per share:
Net income (loss) attributable to common stockholders	$ 4,627
Allocation of undistributed income (loss)	$ 4,627
Weighted average shares used in calculating net income (loss) per share, basic	211,021
Number of shares used in diluted calculation	211,021
Diluted net income (loss) per share	$ 0.02

Net (Loss) Income Per Share -_2

Net (Loss) Income Per Share - Schedule of Potentially Dilutive Securities not Included in Diluted Per Share Calculations (Details) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations	4,569	218,664
Convertible Preferred Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations		179,814
Shares Subject to Outstanding Stock Options and Restricted Stock Units
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations	4,352	36,672
Unvested Early Exercised Stock Options
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations		2,178
Shares Subject to Employee Stock Purchase Plan
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Potentially dilutive securities not included in diluted per share calculations	217