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| Criterion |  Operations RACI Matrix |  Architecture Architecture Decision Record |  Operations A3 Problem Solving |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | With unclear responsibilities across several roles or areas, the method creates unambiguous accountability logic. It reduces friction because decision, execution, contribution, and information become separately visible. | 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. | 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 | 45-90 min | 15-45 min | 45-90 min | 15-30 min |
Participantsdifferent | 2-8 | 1-3 | 2-5 | 2-6 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop |
Outputdifferent | RACI Matrix, Responsibility Map, Decision Notes | ADR File, Decision Log, Rationale | A3 Report, Action Plan, Root Cause Analysis | Root cause notes, Countermeasures |
Tagsno overlap | RolesResponsibilityGovernanceOperations | ArchitectureRationaleDocumentationGovernance | LeanProblem solvingCoachingOperations | Root causeIncidentLeanProblem solving |