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| Criterion |  Domain Modeling EventStorming |  UX Research Customer Journey Mapping |  Operations 5 Whys |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | When a domain consists of many events, rules, and states, it creates a shared modeling space for the team. It bundles language, flows, and boundaries before domain knowledge fragments into siloed views. | When a user journey falls apart across many touchpoints, customer journey mapping makes the experience visible as a coherent arc. Phases, emotions, and breaks become legible enough to prioritize critical moments deliberately. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 2-8 h | 2-4 h | 15-30 min | 2-4 h |
Participantsdifferent | 5-12 | 4-10 | 2-6 | 2-6 |
Formatdifferent | Workshop | Workshop | Workshop | Workshop + async |
Outputdifferent | Event Timeline, Ubiquitous Language, Boundaries, Open Questions | Journey Map, Pain-point List, Opportunity Backlog | Root cause notes, Countermeasures | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | Domain-Driven DesignEventsDiscoveryWorkshop | JourneyServiceService design | Root causeIncidentLeanProblem solving | Root causeSafetyIncident |