architecture-patterns

To separate concerns when refactoring a monolith, map your current service into domain, application, adapters, and infrastructure layers. This structured approach establishes clear boundaries and defined ports, transforming a tightly coupled codebase into a testable, modular system.

Clean Architecture and Hexagonal Architecture both enforce separation of concerns for maintainable backend systems, but Hexagonal Architecture specifically emphasizes ports and adapters to isolate the domain, while Clean Architecture focuses broadly on dependency inversion across concentric layers.

You need Domain-Driven Design when building new enterprise services that require robust domain models and clear boundaries. It is essential for managing complex business logic and ensuring your architecture remains scalable and maintainable across large systems.

Yes, you can use these backend design patterns for a microservices migration. The skill provides structured guidance and examples specifically for migrating monolithic architectures into scalable, modular microservices with clear separation of concerns.

To establish architectural standards across your engineering team, apply structured guidance and templates for Clean Architecture and DDD. Implementing a small pilot module with defined ports and adapters sets a repeatable baseline for scalable, maintainable codebases.