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| Criterion |  Operations Gemba Walk |  Operations Process Mapping |  Decision Making Decision Matrix |  Product Strategy ICE Scoring |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | With a confusing workflow that has many handoffs, the method makes the actual process visible. It shows where work is passed on, delayed, or duplicated, so improvement targets the right spots. | 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. |
Complexitydifferent | Low | Medium | Medium | Low |
Timedifferent | 30-120 min | 1-3 h | 45-90 min | 30-60 min |
Participantsdifferent | 2-6 | 3-10 | 2-8 | 2-8 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Process Map, Handoff List, Improvement Backlog | Decision Matrix, Scoring Rationale, Selected Option | ICE Table, Top Idea List |
Tagsno overlap | LeanObservationProcessOperations | ProcessOperationsImprovement | DecisionCriteriaScoringTradeoffs | PrioritizationScoringGrowthDecision |