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| Criterion |  Innovation Double Diamond |  DevOps Blameless Postmortem |  Agile 4Ls Retrospective |  Agile Mad Sad Glad |
|---|---|---|---|---|
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 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. | When a team's or workshop's mood needs to become readable, it structures emotional signals with little setup. It makes strain, relief, and sources of energy tangible. |
Complexitydifferent | Medium | Medium | Low | Low |
Timedifferent | Wochen bis Monate | 30-90 min | 45–75 min | 30-60 min |
Participantsdifferent | 3-12 | 3-12 | Team members involved | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Problem Statement, Solution Options, Prototypes, Deliverables per Phase | Postmortem Doc, Action Items, Timeline | 4Ls Board, Learning Themes, Improvement Actions | Emotion Board, Themes, Action Items |
Tagsno overlap | ProcessDivergenceInnovation | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveLearningReflectionTeam | RetrospectiveTeamReflection |