aspnetcore-realworld-example-app VS TodoApi

This is a stellar example of a fully-fledged aspnet core app you can pull down & look at.

This is their .NET repo for anyone interested. Has some good stuff, but would argue that a good bit of stuff in the features could be pushed down into the domain.

checkout the gothinkster project on github.. it has a similar structure to what you are trying to implement. https://github.com/gothinkster/aspnetcore-realworld-example-app/blob/master/src/Conduit/Domain/Person.cs

Shameless plug https://github.com/davidfowl/TodoApi

This is a fairly common scenario (externalizing the authentication piece but still wanting app-local storage of some user information) that isn't well documented (we're working on that). You might try taking a look at this app by u/davidfowl that supports what you're asking about: https://github.com/davidfowl/todoapi

Good news: David Fowler has a full showcase repository TodoApi

ASP.NET Core Identity.However, most examples use Identity with the MVC/Blazor. I need to support both a SPA and a mobile app and I am not sure if that is the recommended approach here.(Perhaps I should use the backend for frontend approach like David Fowler showcases in https://github.com/davidfowl/TodoApi ?)

Throwing mine in the ring https://github.com/davidfowl/TodoApi/

Example at https://github.com/davidfowl/CommunityStandUpMinimalAPI/blob/main/TodoApi/Program.cs

A basic example looks like: https://github.com/davidfowl/CommunityStandUpMinimalAPI/blob...

Some more documentation on integration tests: https://learn.microsoft.com/en-us/aspnet/core/test/integrati...

Pre .NET 6, there's a Startup.cs file that is used to set these up. .NET 6+ just puts them in Program.cs by default, but you can still use a Startup.cs if you'd prefer. Example of the newer template in Program.cs is here