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| Criterion |  Product Strategy ICE Scoring |  Operations 5 Whys |  Growth A/B Testing |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | When ideas need sorting quickly, it condenses impact, confidence, and effort into one compact score. It connects customer value, product logic, and decision priorities. The result is captured as an ICE table and top-ideas list. | 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 two variants compete, discussions quickly decide by taste rather than effect. A/B Testing checks behavior under controlled conditions and separates real improvement from chance or expectation effects. | 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. |
Complexitydifferent | Low | Low | High | High |
Timedifferent | 30-60 min | 15-30 min | 1-4 Wochen | 1-6 Wochen |
Participantsdifferent | 2-8 | 2-6 | 1-6 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | ICE Table, Top Idea List | Root cause notes, Countermeasures | Experiment results, Decision log, Learning summary | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | PrioritizationScoringGrowthDecision | Root causeIncidentLeanProblem solving | ExperimentsGrowthAnalyticsValidation | QualityProblem solvingRoot cause |