I have an Azure app service with a single custom domain. Within the app service, I have several virtual applications deployed.
In specifically two of these virtual applications (let's call them app1 and app2), they need to communicate with each other - each is a .Net Core 3.1 API solution.
I have set up test controllers - I can call each virtual applications' test method in their test controller from Postman, so I can verify that the services are up and running and responding as expected.
Yet, if I try to call app2 test controller/method from app1 test controller/method (or the other way around) I get a 404 "Not Found" error, which leads me to suspect I have not added or configured a networking component.
Try as might, I have not found anything that is specific to virtual applications having or not having permissions to communicate.
Any direction or thoughts here would be most appreciated.