Azure App Service is a service used to create and deploy scalable, mission-critical web apps.
Thanks for asking question! You may use a URL rewrite to force the traffic to HTTPS Also the process depends upon what kind of CDN you are using for Azure CDN premium offering from Verizon, you can find instructions Here.
You may also refer to https://learn.microsoft.com/en-us/azure/cdn/cdn-standard-rules-engine