clean-architecture

The dependency rule in clean architecture mandates that inner circles defining policies and core business rules cannot depend on outer circles implementing details, ensuring high-level logic remains pure and independent of frameworks.

Structure software using clean architecture by defining boundary layers, applying SOLID principles and dependency inversion, and wiring concrete implementations through a Main composition root that plugs in adapters for persistence and UI.

Use clean architecture for software design when you need to enforce boundary definitions, enable plugin-friendly infrastructure swaps, and maintain high testability and evolvability across changing technologies and delivery mechanisms.

Wire infrastructure adapters in a clean architecture Main composition root by plugging concrete implementations for persistence, UI, and external services into use case boundaries at startup, enabling infrastructure swaps without modifying core business rules.