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Employee Incentive Plans (Tables)
 12 Months Ended
Jan. 31, 2022
Share-based Payment Arrangement [Abstract]  
Schedule of Stock-based Compensation Expense by Award Type Stock-based compensation expense by award type was as follows (in thousands):
 Year Ended January 31,
 202220212020
Stock options$132,130 $21,371 $21,888 
RSUs 334,010 164,412 94,637 
ESPP 15,024 10,373 9,408 
Restricted stock awards84,316 25 590 
Restricted common stock — — 101 
Total $565,480 $196,181 $126,624 
Schedule of Stock-based Compensation Expense by Statement of Operations Location Stock-based compensation expense was recorded in the following cost and expense categories in the Company’s consolidated statements of operations (in thousands):
 Year Ended January 31,
 202220212020
Cost of revenue: 
Subscription$49,091 $21,895 $12,923 
Professional services and other12,324 8,083 7,164 
Research and development192,712 63,270 37,683 
Sales and marketing135,916 53,802 38,077 
General and administrative175,437 49,131 30,777 
Total$565,480 $196,181 $126,624 
Schedule of Stock Option Activity A summary of the Company’s stock option activity and related information was as follows:
 
Number of
Options 
Weighted-
Average
Exercise
Price 
Weighted-
Average
Remaining
Contractual
Term
(Years)
Aggregate
Intrinsic Value
(in thousands)
Outstanding as of January 31, 20218,250,113 $18.93 5.6$1,980,668 
Granted2,565,055 93.95 
Exercised (2,578,074)21.02 
Canceled (253,016)106.41 
Outstanding as of January 31, 20227,984,078 $39.59 5.2$1,314,031 
As of January 31, 2022
Vested and expected to vest7,984,078 $39.59 5.2$1,314,031 
Vested and exercisable 6,467,950 $13.29 4.5$1,194,987 
Schedule of Black-Scholes Option Pricing Model Estimated Fair Value Assumptions The Company used the Black-Scholes option pricing model to estimate the fair value of stock options granted with the following assumptions:
 Year Ended January 31,
 202220212020
Expected volatility46 %45 %43 %
Expected term (in years)6.36.36.3
Risk-free interest rate1.03 %
0.37% - 0.44%
1.55% - 2.27%
Expected dividend yield— — — 
Schedule of Nonvested Restricted Stock Units Activity A summary of the Company’s RSU activity and related information was as follows:
 Number of
RSUs		Weighted-
Average
Grant Date Fair Value Per Share
Outstanding as of January 31, 20214,452,107 $122.90 
Granted5,110,925 236.57 
Vested(2,294,380)125.75 
Forfeited(1,042,905)170.23 
Outstanding as of January 31, 20226,225,747 $207.26 
Schedule of ESPP Black-Scholes Option Pricing Model Estimated Fair Value Assumptions The Company estimated the fair value of ESPP purchase rights using a Black-Scholes option pricing model with the following assumptions:
Year Ended January 31,
202220212020
Expected volatility
44% - 48%
48% - 54%
43% - 59%
Expected term (in years)
0.5 - 1.0
0.5 - 1.0
0.5 - 1.0
Risk-free interest rate
0.06% - 0.29%
0.09% - 0.18%
1.53% - 2.05%
Expected dividend yield———