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| Criterion |  Innovation Double Diamond |  Operations Learning Review |  DevOps Blameless Postmortem |  Agile 4Ls Retrospective |
|---|---|---|---|---|
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. | 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. | 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 a sprint should not only be assessed but also learned from, it captures experience in clear learning categories. It records what worked, what's missing, and what should run differently next time. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | Wochen bis Monate | 1-3 h | 30-90 min | 45–75 min |
Participantsdifferent | 3-12 | 3-10 | 3-12 | Team members involved |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Learning Review Notes, System Factors, Improvement Actions | Postmortem Doc, Action Items, Timeline | 4Ls Board, Learning Themes, Improvement Actions |
Tagsno overlap | ProcessDivergenceInnovation | LearningRetrospectiveIncidentOperations | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveLearningReflectionTeam |