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| Criterion |  Operations 5 Whys |  Product Strategy KPI Tree |  Operations Root Cause Analysis |  Engineering Goal Question Metric |
|---|---|---|---|---|
Purposedifferent | 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. | When metrics across the organization drift apart, it arranges drivers and effects under one shared logic. It connects customer value, product logic, and decision priorities. The result is captured as a KPI tree and owner list. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | 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 | 15-30 min | 90-180 min initial, dann laufend | 1-4 h | 90-180 min |
Participantsdifferent | 2-6 | 3-8 | 3-8 | 3-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Root cause notes, Countermeasures | KPI Tree, Owner List | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | GQM Table, Metric Profiles |
Tagsno overlap | Root causeIncidentLeanProblem solving | MetricsStrategyAlignmentMeasurement | Root causeProblem solvingQualityIncident | MetricsMeasurementEngineeringAlignment |