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| Criterion |  Architecture Architecture Decision Record |  Operations 5 Whys |  Architecture Views and Beyond |  Operations 8D Problem Solving |
|---|---|---|---|---|
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 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. | Views and Beyond organizes architecture into several views so no single diagram has to do everything at once. This makes it possible to choose the representation that fits the stakeholder's question. | 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 | Low | Low | Medium | High |
Timedifferent | 15-45 min | 15-30 min | 1-3 Tage | 1-6 Wochen |
Participantsdifferent | 1-3 | 2-6 | 1-4 | 4-10 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | ADR File, Decision Log, Rationale | Root cause notes, Countermeasures | Architecture Views, Cross-view Notes, Rationale | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | Root causeIncidentLeanProblem solving | DocumentationStakeholdersArchitecture | QualityProblem solvingRoot cause |