What is Hexagonal Architecture?

Hexagonal architecture, also known as ports and adapters architecture, is a software design approach that aims to isolate the core logic of an application from external concerns by separating it into loosely coupled components.

It is based on three basic principles: the user side, the business logic at the center, and the server side, which facilitate the application's interaction with the outside world in a controlled manner.

It allows delaying decisions about technologies, switching technologies with less impact, testing business logic isolated from external systems, and reshaping the internal domain with less effort on external systems.

It includes domain objects, use cases, input and output ports, and adapters, which are key elements for the successful implementation of this architecture.