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| Criterion |  DevOps Incident Timeline Analysis |  Product Discovery MVP Test Matrix |  Product Discovery Test Card |  Product Discovery Fake Door Test |
|---|---|---|---|---|
Purposedifferent | For an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. | 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. | The Test Card turns a critical assumption into a testable claim and specifies in advance which result counts as success. | 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. |
Complexitydifferent | Medium | Medium | Low | Medium |
Timedifferent | 60-180 min | 45-75 min | 20-35 min | 1-5 Tage |
Participantsdifferent | 3-10 | 2-8 | 1-5 | Nutzertraffic |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Async |
Outputdifferent | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | Test Matrix, Test Plan | Test Card with a pre-set threshold | Click Data, Interest Signal, Learning Decision |
Tagsno overlap | IncidentTimelineSite Reliability Engineering | ExperimentsValidationDiscoveryOptions | ExperimentsValidationDiscoveryHypothesis | ValidationExperimentsDemandDiscovery |