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Common Stock and Stockholders' Equity (Tables)

3 Months Ended

Apr. 30, 2021

Equity [Abstract]

Summary of Shares of Common Stock Reserved for Future Issuance

Shares of common stock reserved for future issuance are as follows:

			April 30, 2021
Outstanding stock options and unvested RSUs and PSUs outstanding			16,170,681
Available for future stock option, RSU, and PSU grants			15,344,651
Available for ESPP			2,944,123
Total common stock reserved at April 30, 2021			34,459,455

Schedule of Stock Option Activity

Stock option activity is as follows:

			Number of Shares						Weighted Average Exercise Price						Weighted Average Remaining Contractual Term						Aggregate Intrinsic Value
																					(in thousands)
Outstanding at January 31, 2021			11,177,838						$	8.25					6.9 years						$	452,452
Granted			32,428						$	41.17
Exercised			(536,593)						$	5.23
Canceled			(40,185)						$	9.09
Outstanding at April 30, 2021			10,633,488						$	8.50					6.7 years						$	361,089
Vested as of April 30, 2021			7,447,293						$	6.00					6.2 years						$	271,497

Schedule of Assumptions Used to Calculate Fair Value of Employee Stock Option Grants Made

The following assumptions were used to calculate the fair value of employee stock option grants made during the periods:

			Three Months Ended April 30,
			2021						2020
Expected dividend yield			—		%				—		%
Expected volatility			43.8%						43.3		%
Expected term (years)			6.1						6.1
Risk-free interest rate			1.16%						0.46% - 0.47%

Schedule of Restricted Stock Unit Activity

A summary of the Company’s RSU activity and related information is as follow:

			Number of RSUs						Weighted Average Grant Date Fair Value Per Share
Outstanding at January 31, 2021			3,971,128						$	23.60
Granted			1,839,607						$	41.17
Vested			(174,135)						$	18.48
Canceled			(226,716)						$	24.10
Outstanding at April 30, 2021			5,409,884						$	29.72

Schedule of Stock-based Compensation Expense

Stock-based compensation expense included in the Company’s condensed consolidated statements of operations is as follows:

			Three Months Ended April 30,
			2021						2020
			(in thousands)
Cost of revenue			$	676					$	344
Research and development			4,440						2,183
Sales and marketing			3,954						2,285
General and administrative			4,542						3,496
Total			$	13,612					$	8,308

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