🔧 Hexagonal Architecture is Not a Layered Architecture: Topology, Safety, and When to Walk Away

Most introductory articles draw it as an onion


Every article about Hexagonal Architecture ends up with the same diagram: three concentric circles. Domain on the inside, Application in the middle, Infrastructure on the outside. Onion Architecture. Clean Architecture. Layered Architecture with a different hat.

This is not what Ports &...