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| Criterion |  Operations 5 Whys |  Domain Modeling EventStorming |  Operations A3 Problem Solving |
|---|---|---|---|
Purposedifferent | 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. | 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. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 15-30 min | 2-8 h | 45-90 min |
Participantsdifferent | 2-6 | 5-12 | 2-5 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | Event Timeline, Ubiquitous Language, Boundaries, Open Questions | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Root causeIncidentLeanProblem solving | Domain-Driven DesignEventsDiscoveryWorkshop | LeanProblem solvingCoachingOperations |
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