What problem does it solve? Teams doing strategic Domain-Driven Design often struggle to decide which parts of the business deserve custom investment and which should be bought or reused. This Skill turns raw event flows and boundary clues into a defensible subdomain classification with a core domain declaration. ## Core Features & Use Cases - Capability Extraction and Annotation: Extracts business capabilities from event flows, deduplicates synonyms, and annotates business value, complexity, change frequency, and external dependencies. - Subdomain Classification: Classifies capabilities as Core, Supporting, or Generic with rationale and suggested investment levels. - Core Domain Declaration and Ownership: Produces a one-page core domain declaration with measurable indicators plus team ownership and cross-team collaboration recommendations. - Use Case: After running domain discovery on an e-commerce platform, feed the event flows into this Skill to identify that pricing optimization is the Core subdomain while notifications and reporting are Generic, then hand the boundary candidates to context mapping. ## Quick Start Ask the assistant to classify subdomains by pasting the event flow table and boundary clues from ddd-discover and requesting the capability list, classification table, core domain declaration, and ownership recommendations.
