CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jul. 31, 2019	Jan. 31, 2019
Current assets:
Cash and cash equivalents	$ 213,886	$ 63,624
Marketable securities	541,380	112,777
Accounts receivable, net of allowances of $4,401 and $2,071 as of July 31, 2019 and January 31, 2019, respectively	95,682	63,613
Accounts receivable, allowances	4,401	2,071
Deferred contract acquisition costs, current	35,502	26,453
Prepaid expenses and other current assets	29,609	10,252
Total current assets	916,059	276,719
Deferred contract acquisition costs, non-current	37,688	29,063
Property and equipment, net	51,987	37,275
Operating lease right-of-use assets	51,126
Other assets, non-current	13,063	11,508
Total assets	1,069,923	354,565
Current liabilities:
Accounts payable	819	4,963
Accrued expenses and other current liabilities	64,586	32,256
Deferred revenue, current	163,591	115,122
Total current liabilities	228,996	152,341
Deferred revenue, non-current	17,816	10,651
Operating lease liabilities, non-current	48,104
Other liabilities, non-current	31,211	39,460
Total liabilities	326,127	202,452
Commitments and contingencies (Note 8)
Stockholders’ equity (deficit):
Preferred stock	$ 0	$ 0
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	200,000,000	0
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, $0.001 par value per share, 2,000,000,000 and 320,000,000 Class A shares authorized as of July 31, 2019 and January 31, 2019, respectively; 49,867,103 and zero shares issued and outstanding as of July 31, 2019 and January 31, 2019, respectively; 300,000,000 Class B shares authorized as of July 31, 2019 and January 31, 2019; 223,619,064 and 90,327,435 shares issued and outstanding as of July 31, 2019 and January 31, 2019, respectively	$ 272	$ 89
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Additional paid-in capital	$ 760,990	$ 17,760
Accumulated other comprehensive loss	(68)	(135)
Accumulated deficit	(17,398)	(25,153)
Total stockholders’ equity (deficit)	743,796	(7,439)
Total liabilities, convertible preferred stock, and stockholders’ equity (deficit)	1,069,923	354,565
Convertible Preferred Stock
Stockholders’ equity (deficit):
Preferred stock	$ 0	$ 159,552
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	0	158,104,540
Preferred stock, shares issued (in shares)	0	152,665,804
Preferred stock, shares outstanding (in shares)	0	152,665,804
Class A Common Stock
Stockholders’ equity (deficit):
Common stock, shares authorized (in shares)	2,000,000,000	320,000,000
Common stock, shares issued (in shares)	49,867,103	0
Common stock, shares outstanding (in shares)	49,867,103	0
Class B Common Stock
Stockholders’ equity (deficit):
Common stock, shares authorized (in shares)	300,000,000	300,000,000
Common stock, shares issued (in shares)	223,619,064
Common stock, shares outstanding (in shares)	223,619,064	90,327,435