architecture-patterns

Design scalable backend architecture by applying Clean Architecture, Hexagonal Architecture, and Domain-Driven Design. This structured approach defines clear dependency rules, domain boundaries, and ports/adapters to ensure testability and technology-agnostic core logic for new projects or refactors.

Clean Architecture focuses on dependency rules to separate core logic from external layers, while Hexagonal Architecture uses ports and adapters to isolate the domain. Both patterns are combined here with Domain-Driven Design to maximize maintainability and testability across backend systems.

Refactor monoliths using Domain-Driven Design to establish bounded contexts and domain models. Hexagonal Architecture ports and adapters are then applied to isolate external dependencies, ensuring the refactored backend achieves a testable, technology-agnostic core.

Use Domain-Driven Design patterns when establishing architecture standards across teams or designing new services that require clear boundaries and domain models. DDD provides a technology-agnostic core that satisfies requirements for testability and long-term maintainability in complex backend systems.

Yes, Hexagonal Architecture standardizes backend systems across teams by enforcing ports and adapters for external integrations. Combined with Clean Architecture and DDD, it establishes clear dependency rules and domain boundaries, ensuring consistent testability and maintainability across multiple projects.

Yes, a technology-agnostic core is a fundamental requirement of Clean Architecture. By isolating domain models and business logic from external frameworks through defined boundaries and ports/adapters, the architecture ensures high testability and maintainability for your backend systems.