Understanding Architectural Layers

Welcome back! In Clean Architecture, your application is structured into distinct, concentric layers. Think of an onion, with layers protecting the core.

This structure helps manage complexity, making your software easier to understand, test, and maintain over time. It keeps your core business logic safe from external changes.

Clean Architecture defines four primary layers, moving from the innermost (most stable) to the outermost (most volatile):

• Entities: Your core business rules.
• Use Cases: Application-specific rules.
• Interface Adapters: Translators between layers.
• Frameworks & Drivers: External details like databases and UIs.

Each layer has a specific role in keeping your system clean and organized.