Each Deployment slot has a URL that you can use to send the request to the application that is deployed in it. In some cases, you may want to replace the application that is deployed in the production Deployment slot (the one that poses the URL of your App Service) with one that is deployed in one of the Deployment slots. Instead of redeploying the application to the production Deployment slot, you can use the Swap operation, which switches between the two Deployment slots, such that the swapped Deployment slot becomes the production one.
- Click on the Swap button:
- In the App Service overview blade, or from the Deployment slots blade, select the source and destination slots:
- In the Application settings blade, you can configure a specific setting to retain its value even after a swap:
Deployment slots are not only useful for isolating application changes when you have a new version to deploy, they also allow you to test different configurations and features in a controlled way, with what is usually referred to as Testing in production.