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| Criterion |  Decision Making DACI |  Operations A3 Problem Solving |  Operations RACI Matrix |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | In cross-functional decisions, responsibilities quickly blur between approval, influence, and execution. DACI arranges these roles so decision pressure, contribution, and information stay cleanly separated. | 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. | 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. | 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 | Medium | Low | Low |
Timedifferent | 30-60 min | 45-90 min | 45-90 min | 15-30 min |
Participantsdifferent | 2-10 | 2-5 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | DACI Matrix, Decision Owner, Decision Log | A3 Report, Action Plan, Root Cause Analysis | RACI Matrix, Responsibility Map, Decision Notes | Root cause notes, Countermeasures |
Tagsno overlap | DecisionRolesGovernanceAlignment | LeanProblem solvingCoachingOperations | RolesResponsibilityGovernanceOperations | Root causeIncidentLeanProblem solving |