CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,179,958	$ 95,382
Marketable securities	146,592	142,733
Accounts receivable, net	44,298	34,270
Deferred contract acquisition costs	13,001	9,167
Prepaid expenses and other current assets	37,956	30,852
Total current assets	1,421,805	312,404
Property and equipment, net	21,205	20,784
Deferred contract acquisition costs, noncurrent	13,219	9,106
Intangible assets, net	2,985	6,223
Goodwill	6,181	6,181
Deferred tax assets	16,048	4,393
Other assets	6,062	8,333
Total assets	1,487,505	367,424
Current liabilities:
Accounts payable	3,184	3,710
Accrued liabilities	54,146	35,608
Deferred revenue	143,159	104,184
Income tax payable	865	8,740
Total current liabilities	201,354	152,242
Other liabilities	18,273	16,827
Total liabilities	219,627	169,069
Commitments and contingencies (Note 9)
Redeemable convertible preferred stock, $0.0001 par value per share; zero and 154,055,430 shares authorized as of September 30, 2021 and December 31, 2020, respectively; zero and 153,937,730 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively; aggregate liquidation preference of zero and $326,559 as of September 30, 2021 and December 31, 2020, respectively	0	2,895,096
Stockholders' Equity (Deficit)
Preferred stock, $0.00001 par value per share; 10,000,000 and zero shares authorized as of September 30, 2021 and December 31, 2020, respectively; zero shares issued and outstanding as of September 30, 2021 and December 31, 2020	0	0
Additional paid-in capital	4,464,100	0
Accumulated other comprehensive (loss) income	(20)	411
Accumulated deficit	(3,196,205)	(2,697,153)
Total stockholders' equity (deficit)	1,267,878	(2,696,741)
Total liabilities, redeemable convertible preferred stock and stockholders' equity (deficit)	1,487,505	367,424
Common Stock
Stockholders' Equity (Deficit)
Common stock, value	0	1
Class A Common Stock
Stockholders' Equity (Deficit)
Common stock, value	0	0
Class B Common Stock
Stockholders' Equity (Deficit)
Common stock, value	$ 3	$ 0