What is Hexagonal Architecture?

Hexagonal Architecture, also known as Ports and Adapters Architecture, is a software design pattern that aims to create loosely coupled application components. It does this by separating the application core from the external services or actors that interact with it, such as databases, user interfaces, or external systems. The core communicates with the outside world through ports (interfaces), and specific implementations of these ports are provided by adapters. This allows for flexibility in swapping out external dependencies without affecting the application core, making the application more testable, maintainable, and adaptable to changing requirements.