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| Criterion |  Operations A3 Problem Solving |  Architecture Architecture Decision Record |  Architecture Views and Beyond |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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 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. |
Complexitydifferent | Medium | Low | Medium | Low |
Timedifferent | 45-90 min | 15-45 min | 1-3 Tage | 15-30 min |
Participantsdifferent | 2-5 | 1-3 | 1-4 | 2-6 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | ADR File, Decision Log, Rationale | Architecture Views, Cross-view Notes, Rationale | Root cause notes, Countermeasures |
Tagsno overlap | LeanProblem solvingCoachingOperations | ArchitectureRationaleDocumentationGovernance | DocumentationStakeholdersArchitecture | Root causeIncidentLeanProblem solving |