swift-architecture

A scalable Swift application architecture uses a 4-layer structure encompassing Apps, Features, Services, and SDKs. This separation defines specific layer responsibilities and dependency rules to ensure long-term maintainability and efficient development.

Organizing new features in iOS development requires placing them within the Features layer of a 4-layer Swift architecture. This approach isolates feature logic while defining strict dependencies on underlying Services and SDKs layers for clean separation.

In a clean Swift architecture, business logic belongs in the Features or Services layers, depending on its scope. The 4-layer system defines strict dependency rules to help you determine the exact placement and prevent architectural violations.

Yes, this 4-layer Swift architecture applies to both iOS and macOS development. It provides layer responsibilities, code style guidelines, and configuration details that ensure maintainable applications across Apple platforms.

To enforce architectural compliance in Swift, apply the dependency rules and code style guidelines defined by the 4-layer architecture. This framework details specific best practices to ensure code adheres to project conventions and layer boundaries.

You should avoid a 4-layer Swift architecture for very small or prototype applications where strict layer responsibilities and dependency rules introduce unnecessary overhead. It is designed for building robust, scalable, and maintainable applications.