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| Criterion |  Architecture Architecture Decision Record |  Operations A3 Problem Solving |  Operations Fishbone Diagram |
|---|---|---|---|
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 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. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | Low | Medium | Low |
Timedifferent | 15-45 min | 45-90 min | 30-60 min |
Participantsdifferent | 1-3 | 2-5 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | A3 Report, Action Plan, Root Cause Analysis | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | LeanProblem solvingCoachingOperations | Root causeQualityOperations |
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