Clean Architecture is useful only if it helps teams ship reliably.
Core rule
Keep domain rules independent from UI, infrastructure, and database details.
Practical starting point
- Domain project: entities, value objects, domain services.
- Application project: use cases and interfaces.
- Infrastructure project: EF Core, external APIs, message bus.
- API project: HTTP concerns only.
Why this matters
This structure reduces accidental coupling and improves testability.
