Comparisons of architectural styles

The first three architectural styles we discussed in this chapter have a great deal of similarities. They all aim to solve the same issues; the variations are in the approaches.

Meanwhile, the Connect pattern focuses on the testability and extensibility of remote system interactions.

Dependency on frameworks and technologies

Traditional architectures often tightly couple the business logic with specific frameworks, libraries, or technologies. This makes it difficult to switch or upgrade these components without making widespread changes throughout the code base.

Clean Architecture proposes the Entities layer for enterprise business rules and the Use Cases layer for application-specific business rules. Both are neutral to choices of frameworks and technologies.

The hexagonal architecture proposes the core as the centerpiece for business logic, also free of the choices of frameworks and technologies.

FCIS proposes the functional core...