clean-architecture

Structure a .NET Web API project by separating Domain rules, Application use case handlers, Infrastructure implementations, and API endpoints. This clean architecture isolates business logic from frameworks like EF Core, making the codebase easier to scale and test.

The best way to prevent EF Core persistence from leaking into your domain layer is using dependency inversion. Move EF Core implementations behind interfaces in the Infrastructure layer, ensuring the Domain depends on nothing external.

Organize use case handlers in a clean architecture .NET application by modeling commands and queries as dedicated Application layer handlers. These handlers manage validation and orchestration, keeping API endpoints thin and free of business logic.

Encapsulate business rules and domain entity behavior inside the Domain layer. This domain-first approach keeps invariants protected within entities rather than spreading logic across API endpoints or infrastructure implementations.

Yes, you can swap EF Core for a different database technology without rewriting business logic by treating Infrastructure as a swappable plugin. Implement persistence behind DbContext abstractions or interfaces so technologies can be replaced cleanly.

Dependency inversion matters when designing maintainable .NET apps because it prevents tangled dependencies. It enforces that Infrastructure and API depend on abstractions, allowing you to evolve and scale the codebase without touching core domain rules.