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| Criterion |  DevOps Blameless Postmortem |  Product Discovery MVP Test Matrix |  Product Discovery Riskiest Assumption Test |  Product Discovery Assumption Mapping |
|---|---|---|---|---|
Purposedifferent | After an incident with damage or a near miss, the method creates a sober field for learning without assigning blame. It directs attention to the course of events, conditions, and effective countermeasures. | When several minimal variants compete to answer the same question, it makes comparing and choosing between them cleaner. It separates problem, assumption, solution, and evidence. The result is captured as a Test Matrix and a Test Plan. | 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. | When assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 30-90 min | 45-75 min | 1-2 Wochen pro Iteration | 45-60 min |
Participantsdifferent | 3-12 | 2-8 | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Test Matrix, Test Plan | Prioritized Assumption List, Test Plan, Results Report | Assumption map, Test backlog, Risk ranking |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | ExperimentsValidationDiscoveryOptions | ExperimentsValidationDiscoveryAssumptions | AssumptionsRiskExperimentsValidation |