ANTI-CORRUPTION-LAYER

DDD model translation layer.

Definition

ACL protects your bounded context's ubiquitous language by translating external system concepts into internal concepts (and back). Implementations: Translator (object mapper), Facade (simplified interface), Adapter (technical compat). Crucial when the partner changes frequently or the external model is degraded.

Origin

Pattern formalised by Eric Evans in Domain-Driven Design: Tackling Complexity in the Heart of Software (2003).

Example in context

An EDI hub integrates a VDA legacy partner via an ACL converting VDA fixed-records into modern Java POJOs.

Related terms

• Bounded Context — parent DDD concept.