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| Criterion |  Operations A3 Problem Solving |  Decision Making Decision Matrix |  Product Strategy ICE Scoring |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | 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. | When several options collide with several criteria, comparison quickly becomes subjective. A Decision Matrix makes the trade-off visible and brings weighting, criteria, and options into a shared logic. | 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. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 45-90 min | 45-90 min | 30-60 min | 15-30 min |
Participantsdifferent | 2-5 | 2-8 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Decision Matrix, Scoring Rationale, Selected Option | ICE Table, Top Idea List | Root cause notes, Countermeasures |
Tagsno overlap | LeanProblem solvingCoachingOperations | DecisionCriteriaScoringTradeoffs | PrioritizationScoringGrowthDecision | Root causeIncidentLeanProblem solving |