Design patterns·Modelling the domain
it fetches the aggregate, calls one method on it, saves it, and that is the entire body of the method.
Application service
Also calleduse case service, application layer service
The orchestration object for one use case: load, delegate to the domain, persist, publish. It holds no business rules — that is what makes it different from a domain service — and its thinness is the signal that the model is carrying its weight. Confusing the two is the most common source of an accidentally anaemic model.