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