> Domain-Driven Design (DDD) is the concept that prioritizes business concepts over other types of classification in your codebase (like grouping by file type).

Well, no, it's not. It's true that DDD-based architectures (like Hexagonal or Ports & Adapters) do provide guidance on code organization (I teach courses on this), but to say that code organization is DDD is misleading at best.

As others have said, DDD is so much more than that, and I'd summarize DDD as making Domain Concepts and Behavior primary, instead of the Data (and databases) being the focus.