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| Criterion |  Innovation Double Diamond |  Operations Gemba Walk |  DevOps Blameless Postmortem |  Operations Learning Review |
|---|---|---|---|---|
Purposedifferent | For complex problems with a fuzzy situation, the method cleanly separates search space and decision. It first creates breadth in understanding and then focus in elaboration. This brings open questions, problem definition, and solution path into a traceable movement. | 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. | 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 | Medium | Low | Medium | Medium |
Timedifferent | Wochen bis Monate | 30-120 min | 30-90 min | 1-3 h |
Participantsdifferent | 3-12 | 2-6 | 3-12 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Observation Notes, Improvement Ideas | Postmortem Doc, Action Items, Timeline | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | ProcessDivergenceInnovation | LeanObservationProcessOperations | Site Reliability EngineeringIncidentLearningReliability | LearningRetrospectiveIncidentOperations |