Last week I started a project in F#. In the F# project we are using Giraffe for the backend and we are testing it with Microsoft.AspNetCore.TestHost. This test host allows your ASP.NET Core app to run and be queried, just like it normally would, but with one instance per test and with doing everything in memory. This is great for integration tests, because with a very simple setup you can test your routing, validation, permissions, http return codes, serialization and so on. A lot of stuff that your might otherwise find difficult to test.

They say a picture is worth a thousand words. I would say that a great talk is worth ten times more than that. Especially if you are a beginner looking for their way into a new topic. One such topic is functional programming, with its endofunctors, lambda calculus and set theory.