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| Criterion |  Operations Gemba Walk |  Decision Making Delphi Method |  Product Strategy DIBB |  Operations Kaizen Event |
|---|---|---|---|---|
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. | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. |
Complexitydifferent | Low | High | Low | Medium |
Timedifferent | 30-120 min | 1-4 Wochen | 1-2 h | 0.5-5 Tage |
Participantsdifferent | 2-6 | 6-30 Experten | 2-8 | 4-10 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop |
Outputdifferent | Observation Notes, Improvement Ideas | Expert Forecast, Consensus Range, Assumption Notes | DIBB document, Belief list, Bet list, Learning report | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update |
Tagsno overlap | LeanObservationProcessOperations | ForecastingExpertsDecisionStrategy | StrategyDecisionAssumptionsHypothesis | LeanContinuous improvementOperations |