This is on our long term roadmap.
URL rewrite for Application Gateway v2 is currently in public preview! With this, you can now rewrite URL path and query string parameters based on a condition. The condition will be on request or response parameters.
Also, you get the ability to choose the routing to a backend pool based on the original URL or the rewritten URL.
An error occurred while saving the commentSamuel commented
Are there any news about the status about this feature? I think its a really important feature for a reverse proxy.