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| Criterion |  DevOps Blameless Postmortem |  Product Discovery Fake Door Test |  Product Discovery MVP Test Matrix |
|---|---|---|---|
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 demand is still unclear, it measures interest in a feature before it is built. It separates real behavior from polite agreement and deliberately keeps build effort small. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 30-90 min | 1-5 Tage | 45-75 min |
Participantsdifferent | 3-12 | Nutzertraffic | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Click Data, Interest Signal, Learning Decision | Test Matrix, Test Plan |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | ValidationExperimentsDemandDiscovery | ExperimentsValidationDiscoveryOptions |
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