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| Criterion |  Facilitation Dot Estimation |  Operations Gemba Walk |  Delivery Value Stream Mapping |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | 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 delivery work dissolves into wait times, handoffs, and hidden effort, Value Stream Mapping makes the actual flow visible. The method exposes bottlenecks, idle time, and feedback loops so lead time and improvement levers become tangible. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Low | Low | Medium | High |
Timedifferent | 5-20 min | 30-120 min | 1-3 h | 2-6 h |
Participantsdifferent | 3-20 | 2-6 | 4-10 | 3-10 |
Formatsame | Workshop | Workshop | Workshop | Workshop |
Outputdifferent | Effort Heatmap, Risk Signals, Discussion Targets | Observation Notes, Improvement Ideas | Current-state map, Future-state map, Bottleneck list | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | EstimationEffortRisk | LeanObservationProcessOperations | LeanFlowWasteDelivery | RiskQualityOperationsRoot cause |