DDD Infrastructure services

Question

I am learning DDD and I am a little bit lost in Infrastructure layer.

As I understand, \"all good DDD applications\" should have 4 layers: Presentation, Application, Dom

Answer 1

Maybe it will help to see a potential project structure.

Possible assembly or package structure:

Project.Domain
Project.Infrastructure.Data
Project.Infrastructure.Components
Project.Infrastructure.Services

Possible namespace or folder structure:

Project.Domain
-n- Modules
----n- Account
-------f- Account.xx
-------f- AccountRepository.xx
-------f- Contact.xx
----n- Marketing
-------f- RegionRepository.xx
-n- Shared
-n- Services

Project.Infrastructure.Data (OR-Mappers)
-n- Tables
-n- Views
-n- Procedures
-n- Functions

Project.Infrastructure.Components (Generic)
-n- Mail
-n- Cryptography
-n- UI

Project.Infrastructure.Services (Special Operations)
-f- DoingSomethingService1.xx
-f- DoingSomethingService2.xx
-f- DoingSomethingService3.xx

Domain Entities and Value Types do not use Domain Services. The Application Layer uses the Services of the Domain. The Domain Repository objects use the Infrastructure.Data objects to return Domain objects.