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| Criterion |  Decision Making DACI |  Engineering Fault Isolation |  Engineering Hypothesis-Driven Troubleshooting |  Engineering Goal Question Metric |
|---|---|---|---|---|
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. | 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. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | Helps clarify technical problems, hypotheses, and next steps in concrete terms. It breaks a technical problem into testable parts. The result is captured as a GQM table and metric briefs. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 30-60 min | 30-180 min | 30-240 min | 90-180 min |
Participantsdifferent | 2-10 | 1-6 | 1-6 | 3-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | DACI Matrix, Decision Owner, Decision Log | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | GQM Table, Metric Profiles |
Tagsno overlap | DecisionRolesGovernanceAlignment | TroubleshootingDiagnosisEngineering | TroubleshootingProblem solvingDiagnosis | MetricsMeasurementEngineeringAlignment |