How does DDD affect the project's architecture?

DDD shifts the architecture from "technical" to business-centric.

The main effects:

1. The center is the domain, not a framework or a database. Everything else is a shell around it.
2. The architecture splits into bounded contexts: independent modules with their own models and logic.
3. Dependencies point inward: infrastructure and the UI depend on the domain, not the other way around.
4. Layers become meaningful: Domain, Application, Infrastructure.
5. The project is easier to scale: business changes require minimal edits on the outside.