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| Criterion |  DevOps Blameless Postmortem |  Knowledge Modeling Feynman Technique |  Knowledge Modeling Teach-back |  DevOps Incident Timeline Analysis |
|---|---|---|---|---|
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. | 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. | Teach-back checks whether an explanation actually got through to the other person. The method makes misunderstandings visible early and strengthens shared understanding in advisory and learning situations. | For an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. |
Complexitydifferent | Medium | Low | Low | Medium |
Timedifferent | 30-90 min | 20-60 min | 5-20 min | 60-180 min |
Participantsdifferent | 3-12 | 1 | 2-8 | 3-10 |
Formatdifferent | Workshop + async | Async | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Plain-language Explanation, Knowledge Gaps, Study Notes | Understanding Check, Clarification Notes, Learning Gaps | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | LearningKnowledgeUnderstanding | LearningUnderstandingCommunication | IncidentTimelineSite Reliability Engineering |