In this series I discuss some of the things to be aware of when upgrading ASP.NET Core 2.x apps and libraries to ASP.NET core 3.0. This series doesn't describe adding big new features like Blazor or the gRPC client factory.
Instead, I focus on the basics like updating target frameworks, converting to use the new endpoint routing system, removing obsolete types, and issues I ran into when upgrading my own apps.