For research purposes, I wanted to test how Azure AppService runtime stacks work and I am currently hosting two applications in one Azure AppService (Wordpress and ASP.NET) in separate paths as you can see here:
Everything works fine as I am able to access both applications through browser. What makes me wonder is: how is it possible for both applications to work no matter which runtime stack I choose?
I have tried these two runtimes and both applications work exactly the same:
Seems like all runtime environments are already set up even if you do not choose them. So, what is the point of choosing between them? Is there any difference?
EDIT: I have checked in the app console and I can confirm that all supported runtime environments are installed (for any runtime stack selected in the app):