Description

Similar to Hexagonal/Clean. It relies on the Dependency Inversion Principle. The application core needs no dependencies.

Where to use

• Highly testable systems.

Real World Example

Core Domain -> Domain Services -> Application Services -> UI/Infra.

Code Example

class OnionArchitecture:
    def __init__(self):
        pass

    def execute(self):
        print('Executing Onion Architecture')