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| Criterion |  Knowledge Modeling Teach-back |  Operations After-Action Review |  DevOps Blameless Postmortem |  DevOps Game Day |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | 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. | In preparing for rare incidents, the method tests response capability under controlled conditions. It shows where assumptions about stability, roles, and recovery are too optimistic. |
Complexitydifferent | Low | Low | Medium | High |
Timedifferent | 5-20 min | 20-45 min | 30-90 min | Halber Tag |
Participantsdifferent | 2-8 | 3-12 | 3-12 | 5-20 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Understanding Check, Clarification Notes, Learning Gaps | Lessons learned, Action items, Event summary | Postmortem Doc, Action Items, Timeline | Simulation Notes, Gaps List, Updated Runbooks |
Tagsno overlap | LearningUnderstandingCommunication | LearningOperationsImprovement | Site Reliability EngineeringIncidentLearningReliability | ResilienceOperationsIncident |