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| Criterion |  DevOps Blameless Postmortem |  Agile 4Ls Retrospective |  Team Design Team Topologies Interaction Modes |  Operations Learning Review |
|---|---|---|---|---|
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. | 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 several teams collaborate repeatedly, it describes the right interaction mode for each interface between them. It clarifies responsibility, interaction, and load between teams. The result is captured as an interaction heat map and pairwise agreements. | 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 | 30-90 min | 45–75 min | Half day | 1-3 h |
Participantsdifferent | 3-12 | Team members involved | Team-Leads plus Architecture | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | 4Ls Board, Learning Themes, Improvement Actions | Interaction Heat Map, Agreements per Pair | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveLearningReflectionTeam | TeamAlignmentCollaborationOrganization | LearningRetrospectiveIncidentOperations |