This is in progress for Azure CDN from Microsoft.
-Max G [MSFT]Alex Grönholm supported this idea ·
Thank you for all the votes and feedback. We have started work on this and the capability will be supported soon. If you would like to get in touch with us to discuss your scenarios, please fill this form: https://aka.ms/ApplicationGatewayCohortAlex Grönholm commented
It only maps different URL patterns to different backends. It still passes the original URL as-is. Rewriting is about modifying the URL before it is sent to the backend. The application gateway is not yet capable of doing this.