Stockholders’ Equity and Equity Incentive Plans (Tables)

6 Months Ended

Jul. 31, 2021

Stockholders' Equity Note [Abstract]

Summary of Stock Option Activity Under Equity Incentive Plan

A summary of stock option activity under our equity incentive plan and related information is as follows:

	Stock Options
	Outstanding Stock Options	Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
	(in thousands, except share, life, and per share data)
Balance as of January 31, 2021	9,239,504	$	7.17	7.0	$	3,371,457
Granted	—	$	—
Exercised	(1,593,193)	$	5.03
Canceled/forfeited/expired	(95,621)	$	10.63
Balance as of July 31, 2021	7,550,690	$	7.58	6.5	$	2,797,668
Vested and exercisable as of July 31, 2021	4,851,663	$	4.69	6.2	$	1,811,636

Summary of Restricted Stock Units (RSUs) Activity Under Equity Incentive Plan

A summary of RSU activity under our equity incentive plan and related information is as follows:

	RSUs
	Unvested RSUs	Weighted- Average Grant Date Fair Value Per Share
Unvested as of January 31, 2021	4,510,730	$	194.57
Granted	893,277	$	347.05
Vested	(1,182,958)	$	180.43
Canceled/forfeited	(129,309)	$	245.34
Unvested as of July 31, 2021	4,091,740	$	230.34

Summary of Stock-based Compensation Expense by Line Item

The stock-based compensation expense by line item in the accompanying condensed consolidated statements of operations is summarized as follows:

	Three Months Ended July 31,				Six Months Ended July 31,
	2021		2020		2021		2020
	(in thousands)
Cost of revenue	$	14,778	$	7,727	$	28,844	$	10,976
Research and development	22,917		10,010		43,736		15,234
Sales and marketing	50,856		32,398		102,668		49,521
General and administrative	13,591		6,720		25,863		9,901
Total stock-based compensation expense	$	102,142	$	56,855	$	201,111	$	85,632