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| Criterion |  Operations Barrier Analysis |  Decision Making DACI |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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 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 | Low |
Timedifferent | 2-4 h | 30-60 min | 15-30 min |
Participantsdifferent | 2-6 | 2-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | DACI Matrix, Decision Owner, Decision Log | Root cause notes, Countermeasures |
Tagsno overlap | Root causeSafetyIncident | DecisionRolesGovernanceAlignment | Root causeIncidentLeanProblem solving |
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