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Stockholders' Equity (Deficit) and Employee Incentive Plans - Summary of Stock-based Compensation Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jul. 31, 2022 | Jul. 31, 2021 | Jul. 31, 2022 | Jul. 31, 2021
Employee Service Share Based Compensation Allocation Of Recognized Period Costs |  |  |  |
Recognized stock-based compensation expense | $ 6,727 | $ 1,981 | $ 12,177 | $ 3,810
Research and development |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs |  |  |  |
Recognized stock-based compensation expense | 2,087 | 569 | 3,986 | 1,139
Sales and marketing |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs |  |  |  |
Recognized stock-based compensation expense | 2,463 | 688 | 4,450 | 1,229
General and administrative |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs |  |  |  |
Recognized stock-based compensation expense | 1,919 | 670 | 3,267 | 1,339
Subscription |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs |  |  |  |
Recognized stock-based compensation expense | 141 | 30 | 263 | 57
Cost of Revenue - Services |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs |  |  |  |
Recognized stock-based compensation expense | $ 117 | $ 24 | $ 211 | $ 46

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