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| Criterion |  Operations 8D Problem Solving |  Domain Modeling EventStorming |  Operations A3 Problem Solving |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | High | Medium | Medium | High |
Timedifferent | 1-6 Wochen | 2-8 h | 45-90 min | 2-6 h |
Participantsdifferent | 4-10 | 5-12 | 2-5 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Event Timeline, Ubiquitous Language, Boundaries, Open Questions | A3 Report, Action Plan, Root Cause Analysis | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | QualityProblem solvingRoot cause | Domain-Driven DesignEventsDiscoveryWorkshop | LeanProblem solvingCoachingOperations | RiskQualityOperationsRoot cause |