App1 has deployment slots webapp1-test and webapp1-prod. After swapping webapp1-test into production, App1 experiences performance issues. What is the quickest way to revert to the previous running version of App1?

Swapping the slots is the quickest way to revert because Azure App Service deployment slots allow you to swap a staging slot (webapp1-test) with a production slot (webapp1-prod). After the swap, if issues arise, you can immediately perform another swap to revert to the previous production version, which is now in the staging slot. This is a built-in feature designed for quick rollback. Redeploying App1 would take longer as it involves a full deployment process. Cloning App1 creates a new app and doesn't directly revert the existing one. Restoring a backup would also take significantly longer than a slot swap, as it involves data recovery and configuration.