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| Criterion |  Architecture Architecture Decision Record |  Architecture Architecture Inception Canvas |  Operations A3 Problem Solving |  Operations 5 Whys |
|---|---|---|---|---|
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. | The Architecture Inception Canvas bundles the first architecture questions into a compact decision picture. It fits when an initiative is still in motion but still needs clear guardrails. | 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. | 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 | Low | Low | Medium | Low |
Timedifferent | 15-45 min | 1-2 h | 45-90 min | 15-30 min |
Participantsdifferent | 1-3 | 3-8 | 2-5 | 2-6 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop |
Outputdifferent | ADR File, Decision Log, Rationale | Inception Canvas, Risks, Goal List, Open Questions | A3 Report, Action Plan, Root Cause Analysis | Root cause notes, Countermeasures |
Tagsno overlap | ArchitectureRationaleDocumentationGovernance | AlignmentArchitectureCanvas | LeanProblem solvingCoachingOperations | Root causeIncidentLeanProblem solving |