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| Criterion |  DevOps Blameless Postmortem |  Agile Sprint Retrospective |  Knowledge Modeling Feynman Technique |  Operations After-Action 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 is over and friction shouldn't simply be carried forward, it opens the view onto collaboration and patterns. It creates space to see causes and changes together. | The Feynman Technique checks understanding by explaining a topic so that it stays easy for others to understand. It makes knowledge gaps visible before they become costly in everyday work. | After missions or project phases with unclear outcomes, the method makes visible what actually happened and what can be learned from it. It separates course, effect, and causes so experience turns into solid improvement. |
Complexitydifferent | Medium | Low | Low | Low |
Timedifferent | 30-90 min | Up to 3 hours for a one-month Sprint; shorter Sprints are usually shorter | 20-60 min | 20-45 min |
Participantsdifferent | 3-12 | Scrum Team | 1 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Improvement actions, Team agreements | Plain-language Explanation, Knowledge Gaps, Study Notes | Lessons learned, Action items, Event summary |
Tags1 shared | Site Reliability EngineeringIncidentLearningReliability | RetrospectiveImprovementLearning | LearningKnowledgeUnderstanding | LearningOperationsImprovement |