Hexagonal Architecture

Description

Facts:

• Invented in 2005 by Alistair Cockburn
• it's an alternative name for the original name "Ports & Adapters"
• There are no layers. You have the application, the ports, and the adapters. The ports belong to the application, they are the API/SPI of the application. Adapters are outside the application, and each one depends on the port of the application.
• Says nothing about the structure of the inside of the hexagon (the application)
• Separate the project into two parts, inside and outside