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| Criterion |  DevOps Game Day |  Facilitation 3-Circle Venn Diagram |  DevOps Blameless Postmortem |  Operations Learning Review |
|---|---|---|---|---|
Purposedifferent | 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. | When three perspectives matter at the same time, a Three-Circle Venn Diagram shows the overlaps and remainders precisely. It makes visible where shared effect arises and where only a partial perspective applies. | 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. | 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 | High | Low | Medium | Medium |
Timedifferent | Halber Tag | 15-45 min | 30-90 min | 1-3 h |
Participantsdifferent | 5-20 | 2-8 | 3-12 | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Simulation Notes, Gaps List, Updated Runbooks | Venn Diagram, Overlap Notes, Differentiators | Postmortem Doc, Action Items, Timeline | Learning Review Notes, System Factors, Improvement Actions |
Tagsno overlap | ResilienceOperationsIncident | ComparisonFacilitationAlignment | Site Reliability EngineeringIncidentLearningReliability | LearningRetrospectiveIncidentOperations |