View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Product Strategy DIBB |  Decision Making Pre-Mortem |  Product Discovery Riskiest Assumption Test |  Product Discovery Test Card |
|---|---|---|---|---|
Purposedifferent | 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. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | When an idea hinges on one critical unknown, it prioritizes testing that exact piece of uncertainty first. It separates problem, assumption, solution, and evidence. The result is captured as a prioritized list of assumptions, a test plan, and a result report. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 1-2 h | 20–45 min | 1-2 Wochen pro Iteration | 20-35 min |
Participantsdifferent | 2-8 | Small cross-functional group | 2-6 | 1-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | DIBB document, Belief list, Bet list, Learning report | Risk list, Mitigation plan, Assumption log | Prioritized Assumption List, Test Plan, Results Report | Test Card with a pre-set threshold |
Tagsno overlap | StrategyDecisionAssumptionsHypothesis | RiskDecisionFailurePlanning | ExperimentsValidationDiscoveryAssumptions | ExperimentsValidationDiscoveryHypothesis |