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| Criterion |  Operations Learning Review |  Operations After-Action Review |  DevOps ChatOps |  DevOps Game Day |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | For operational work in a distributed team, the method links communication with direct system control. It records decisions right where the signal, the context, and the execution come together. | 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 | Medium | Low | Medium | High |
Timedifferent | 1-3 h | 20-45 min | Ongoing | Halber Tag |
Participantsdifferent | 3-10 | 3-12 | 2-20 | 5-20 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Learning Review Notes, System Factors, Improvement Actions | Lessons learned, Action items, Event summary | Chat Transcript, Action Log, Automations | Simulation Notes, Gaps List, Updated Runbooks |
Tagsno overlap | LearningRetrospectiveIncidentOperations | LearningOperationsImprovement | CollaborationEngineeringIncident | ResilienceOperationsIncident |