Decompose by subdomain

Intent

Align services to DDD subdomains/bounded contexts to keep models coherent and reduce translation churn.

Use when

• The domain is complex and multiple models exist (different language/meaning per context).
• You want to prevent “one shared model for everything” and make ownership explicit.

Avoid / watch-outs

• Beware “shared kernel creep”: don’t re-centralize the domain via shared libraries/models.
• Use anti-corruption layers between contexts to keep model boundaries real.

Skill mapping

• architecture: define bounded contexts and translations.
• spec: publish contracts (APIs/events) between contexts.
• design: implement translation boundaries cleanly (adapters/facades).