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| Criterion |  Operations Root Cause Tree Analysis |  Architecture Architecture Decision Record |  Operations 8D Problem Solving |
|---|---|---|---|
Purposedifferent | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | An ADR permanently records an architecture decision with context, trade-offs, and consequence. It creates continuity for later changes because the decision path stays traceable. | 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. |
Complexitydifferent | Medium | Low | High |
Timedifferent | 1-3 h | 15-45 min | 1-6 Wochen |
Participantsdifferent | 2-8 | 1-3 | 4-10 |
Formatdifferent | Workshop | Async | Workshop + async |
Outputdifferent | Cause Tree, Evidence Notes, Countermeasures | ADR File, Decision Log, Rationale | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Root causeTreeIncidentQuality | ArchitectureRationaleDocumentationGovernance | QualityProblem solvingRoot cause |
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