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| Criterion |  Delivery Value Stream Mapping |  Facilitation Dot Estimation |  Product Discovery Test Card |  Product Discovery Assumption Mapping |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 1-3 h | 5-20 min | 20-35 min | 45-60 min |
Participantsdifferent | 4-10 | 3-20 | 1-5 | 2-8 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Current-state map, Future-state map, Bottleneck list | Effort Heatmap, Risk Signals, Discussion Targets | Test Card with a pre-set threshold | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | LeanFlowWasteDelivery | EstimationEffortRisk | ExperimentsValidationDiscoveryHypothesis | AssumptionsRiskExperimentsValidation |