Please someone correct me if this is wrong.
I am trying to get the site to be SEO friendly. Or maybe even just plain dot net core mvc project with Razor pages.
The scenario you described would work and since you are charged by the app service plan and not the app service you can host both apps in the same plan and not incur extra charges. However you can also add Angular to the front end of a .NET core application and deploy to a single app in Azure as well. Please see this article for reference
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