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| Criterion |  Operations 8D Problem Solving |  Product Strategy KPI Tree |  UX Research Affinity Diagramming |
|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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 research notes, feedback, or observations sit unconnected side by side, affinity diagramming sorts the raw material into solid themes. Many individual points turn into patterns that make decisions and opportunities clearer. |
Complexitydifferent | High | Medium | Low |
Timedifferent | 1-6 Wochen | 90-180 min initial, dann laufend | 45–90 min |
Participantsdifferent | 4-10 | 3-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | KPI Tree, Owner List | Theme clusters, Insight statements, Opportunity areas |
Tagsno overlap | QualityProblem solvingRoot cause | MetricsStrategyAlignmentMeasurement | SynthesisQualitativeRoot cause |
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