Domain-Driven Design Explained
Model code around the business, not the database — the design approach for complex domains.
Domain-Driven Design (DDD)
A software design approach that models code around the business domain, using a shared language (ubiquitous language) between developers and domain experts to reduce misunderstandings.
Explanation
DDD organizes code into bounded contexts — each representing a distinct business subdomain with its own models and rules. A "Customer" in the billing context has different attributes than a "Customer" in the shipping context, and that is fine. Key patterns include entities, value objects, aggregates, repositories, and domain events. DDD works best for complex business domains where the cost of getting the model wrong is high.
Bookuvai Implementation
Bookuvai applies DDD principles during discovery to identify bounded contexts and define the ubiquitous language. This becomes the foundation for microservice boundaries, database schema design, and API naming. For simpler projects, we apply the principles lightly — clear domain modeling without the full ceremony.
Related Terms
Frequently Asked Questions
- Is DDD overkill for my project?
- If your domain is simple (CRUD with few business rules), full DDD is overkill. But the core idea — modeling code around business concepts with clear naming — is valuable for any project.
- What is a bounded context?
- A boundary within which a particular domain model applies. For example, "Product" means one thing in the catalog context (name, description, images) and another in the inventory context (SKU, quantity, warehouse location).