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| Criterion |  DevOps Blameless Postmortem |  Innovation Lean Startup |  Product Discovery Pretotyping |  Operations 5 Whys |
|---|---|---|---|---|
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. | For uncertain business assumptions, the method forces the idea into contact with real market reactions early. It separates wishful picture, assumption, and observable behavior, so that learning becomes faster than planning. This translates uncertainty into measurable insight. | Pretotyping clarifies whether a customer problem and solution idea create enough real demand. It separates problem, assumption, solution, and evidence, and captures the result as a pretotyping sketch, test setup, and conversion data. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | 30-90 min | Wochen bis Monate je Lernzyklus | Stunden bis wenige Tage | 15-30 min |
Participantsdifferent | 3-12 | 2-8 | 1-4 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Pretotyping sketch, Test setup, Conversion data, Go or no-go decision | Root cause notes, Countermeasures |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | LeanStartupValidationMVP | ValidationDemandMVP | Root causeIncidentLeanProblem solving |