# DOYR on Domain-Driven Design ## Metadata **Status**:: #now **Zettel**:: #zettel/fleeting **Created**:: [[2026-08-03]] ## Synopsis ### Domain-Driven Design Quickly > Avram, A., & Marinescu, F. (2006). *Domain-driven design quickly: A summary of eric evans’ domain-driven design*. #### Ubiquitous Language - Create a ubiquitous language shared in both domain experts and software developers. - Share the model using small diagram as a spotlight on a specific area, and add text to describe the model using the ubiquitous language. #### Building Blocks  - **Layered Architecture**: Separate domain with other parts using layered architecture. Let UI, infrastructure, application depends on domain as in [[Robert C. Martin - Clean Architecture A Craftsman's Guide to Software Structure and Design, First Edition (Highlights)|Clean Architecture]] - **Services**: Functions that involve multiple objects (aggregates) - **Aggregates**: Entity root + relations - **Entities**: Mutable objects with identities - **Value Objects**: Immutable objects - **Factories** create aggregates, **Repositories** persist and restore aggregates.