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| Criterion |  Operations Gemba Walk |  Innovation Lean Startup |  DevOps Blameless Postmortem |  Operations Learning Review |
|---|---|---|---|---|
Purposedifferent | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | 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. | 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. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. |
Complexitydifferent | Low | Medium | Medium | Medium |
Timedifferent | 30-120 min | Wochen bis Monate je Lernzyklus | 30-90 min | 1-3 h |
Participantsdifferent | 2-6 | 2-8 | 3-12 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Observation Notes, Improvement Ideas | Hypothesis list, MVPs, Learning reports, Pivot or persevere decision | Postmortem Doc, Action Items, Timeline | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | LeanObservationProcessOperations | LeanStartupValidationMVP | Site Reliability EngineeringIncidentLearningReliability | LearningRetrospectiveIncidentOperations |