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Stock-based Compensation - Schedule of Classification of Compensation Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2021 | Mar. 28, 2020 | Mar. 31, 2021 | Mar. 28, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense | $ 44,740 | $ 20,484 | $ 90,828 | $ 48,420
Sales and marketing |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense | 13,305 | 7,146 | 28,304 | 14,598
Research and development |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense | 7,921 | 4,765 | 16,364 | 11,697
General and administrative |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense | 19,008 | 5,573 | 37,220 | 16,082
License | Cost of Sales |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense | 20 | 11 | 40 | 11
Support and cloud services | Cost of Sales |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense | 2,309 | 1,524 | 4,611 | 3,010
Professional services | Cost of Sales |  |  |  |
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items] |  |  |  |
Total stock-based compensation expense | $ 2,177 | $ 1,465 | $ 4,289 | $ 3,022

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