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| Criterion |  Architecture Architecture Decision Record |  Operations DMAIC |  Operations Root Cause Tree Analysis |
|---|---|---|---|
Purposedifferent | 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 a process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. | 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. |
Complexitydifferent | Low | High | Medium |
Timedifferent | 15-45 min | 2-12 Wochen | 1-3 h |
Participantsdifferent | 1-3 | 3-10 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | Continuous improvementQualityProcess improvement | Root causeTreeIncidentQuality |
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