Why Hexagonal Architecture Boosts Testability, Maintainability, and Flexibility
Hexagonal (Ports‑and‑Adapters) architecture, introduced by Alistair Cockburn in 2005, separates core business logic from external concerns through defined ports and interchangeable adapters, enhancing testability, maintainability, and technology‑agnostic flexibility, and is especially suited for complex domains requiring multiple interfaces such as REST and message queues.
