nestjs

To enforce NestJS backend architecture, apply standards focusing on thin controllers, rich services, and mandatory DTO validation. This ensures structured and maintainable code within your `apps/api` directory by separating business logic and input validation.

NestJS controllers contain too much business logic when architectural standards are not enforced. Keeping controllers thin and moving logic into services ensures modularity, testability, and maintainability for your backend API development.

The best way to structure NestJS DTOs for input validation is to make them mandatory for all incoming inputs. This enforces data integrity and maintains clear separation between the controller layer and service layer.

To separate business logic from controllers in a NestJS application, encapsulate the logic within rich services. This architectural pattern keeps controllers thin and satisfies requirements for modularity and testability.

Yes, this NestJS architecture enforcement is applicable to API development within the `apps/api` directory, ensuring structured and maintainable code for new resource controllers and services.

You need mandatory DTO validation in NestJS development when creating new API endpoints. It ensures structured and maintainable backend services by validating all inputs before they reach the service layer.