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| Criterion |  DevOps Blameless Postmortem |  Decision Making Wideband Delphi |  DevOps Incident Command |  DevOps Game Day |
|---|---|---|---|---|
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. | A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes. | During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once. | 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 | High | Medium | High |
Timedifferent | 30-90 min | 1-4 h or multiple rounds | As needed | Halber Tag |
Participantsdifferent | 3-12 | 4-12 Experten | 4-15 | 5-20 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Estimate Range, Assumption Log, Expert Consensus Notes | Incident Log, Action Tracker, Stakeholder Updates | Simulation Notes, Gaps List, Updated Runbooks |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | EstimationExpertsForecasting | IncidentOperationsReliability | ResilienceOperationsIncident |