How to migrate App Service to an Azure Function?

Question

We want to change App Service to an Azure Function but we have old apps that point to the .....azurewebsites.net url. How can we do this and preserve the current url of the app or redirect from the app service link to the new azure function endpoint.

Answer 1

You could delete the web app and create a function app with the same, but this would warrant some downtime. Also, if the name is not unique, it could be taken by others in the time between deleting and recreating, though very unlikely.

Another option would be to redirect all requests to your function app by return HTTP 308 responses for all paths.

Ideally, while the default endpoints are useful to getting started, you should opt for using a Custom Domain and/or a gateway like Azure APIM or Application Gateway.