The author discusses the importance of integration tests in ASP.NET Core Web APIs, citing benefits, such as real-life-like REST requests, serialization and deserialization, server application startup code execution, etc. Furthermore, the Microsoft.AspNetCore.Mvc.Testing library is highlighted. Despite challenges, the author promotes maintaining similarity to production during tests. The text then explores code bases and integration tests. Several sections cover API initialization, authentication configuration, running tests against a Sqlite database, and antiforgery subject. The article concludes by discussing alternative approaches found during the research.