ddd-model

MODELS GROUND DECISIONS. DECISIONS GROUND CLAIMS. CLAIMS GROUND CODE. NO MODEL WITHOUT EVIDENCE.

Core principle: Models are the bridge between domain knowledge and code. They make state, invariants, and threats explicit and traceable.

When to invoke

Designing domain logic that involves state transitions, invariants, or aggregates
Modeling a new bounded context or entity relationship
Performing threat modeling (STRIDE) for a security-sensitive change
Documenting system architecture (components, boundaries, data flows)
When ddd-scope identifies domain-modeling or threat-modeling knowledge domains
When ddd-book initialization detects domain code without existing models
When ddd-ground needs a model to ground claims about domain behavior