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| Criterion |  Engineering Fault Isolation |  Operations A3 Problem Solving |  Decision Making DACI |  Decision Making Decision Rights Mapping |
|---|---|---|---|---|
Purposedifferent | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. | 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. | 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. | In organizations with many stakeholders, it often blurs who actually decides and who is merely consulted. It separates options, evaluation criteria, and open risks. The result is captured as a Decision Rights matrix and an agreement. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 30-180 min | 45-90 min | 30-60 min | 90-180 min |
Participantsdifferent | 1-6 | 2-5 | 2-10 | 4-12 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | A3 Report, Action Plan, Root Cause Analysis | DACI Matrix, Decision Owner, Decision Log | Decision Rights Matrix, Agreement |
Tagsno overlap | TroubleshootingDiagnosisEngineering | LeanProblem solvingCoachingOperations | DecisionRolesGovernanceAlignment | DecisionGovernanceAlignmentResponsibility |