dotnet-domain-driven-design

To structure a .NET project using Domain-Driven Design, you organize code into Domain, Application, and Infrastructure layers, defining aggregates, value objects, and repository interfaces to enforce clean architectural boundaries and separate concerns.

The best way to enforce business invariants in C# domain modeling is by encapsulating rules within aggregates and entities using a tell-don't-ask discipline, ensuring domain boundaries remain robust and validation logic stays centralized.

You can apply DDD architecture across Blazor, WPF, and ASP.NET Core applications. The pattern focuses on domain modeling and clean architecture, explicitly avoiding UI or web-framework specifics to maintain separation of concerns.

Repositories and domain events support clean architecture in .NET by abstracting asynchronous data access behind interfaces and signaling intents across layers, which keeps infrastructure concerns decoupled from the core domain.

You should avoid using aggregate roots for domain modeling in C# when the domain logic is trivial or lacks complex invariants, as the overhead of layered architecture and repository abstractions outweighs the structural benefits for simple CRUD operations.