Clean architecture tutorial builds four projects for a simple PromptVault API: Because nothing says 'maintainable' like touching six files to add a field

A comprehensive guide to implementing Clean Architecture in.NET 10 has been released, focusing on dependency direction rather than folder structure. The approach promises testable, maintainable, and framework-agnostic code, but its typical rigid implementation can be overly complex for simple projects. The guide emphasizes the importance of understanding when to use Clean Architecture, such as when multiple teams work on a project or significant infrastructure changes are anticipated. A sample project, PromptVault, demonstrates the setup, with four projects created using the dotnet CLI: Domain, Application, Infrastructure, and API. The Domain project contains entities with behavior, such as the Prompt class, which has methods for updating content and adding tags. The guide highlights the benefits of this approach, including easy testing and flexibility, and notes that EF Core requires some compromises, such as a private parameterless constructor. The project's source code is available on GitHub.