Event Storming

Concept of the skill

Use when discovering a domain through events, commands, actors, policies, aggregates, read models, external systems, and temporal workflows before implementation.

Coverage

Discover domain behavior through temporal events and decisions. Covers domain events, commands, actors, policies, aggregates, read models, external systems, hotspots, timelines, invariants, and handoff into bounded-context, state-machine, data, and API design.

Philosophy of the skill

Event storming starts from "what happened" because events expose real business flow faster than nouns do. Noun-first modeling often freezes premature assumptions. Event-first modeling reveals time, causality, policy, and exceptions.

Do not confuse domain events with technical notifications. "OrderPlaced" is business meaning. "WebhookReceived" is transport detail.

Method