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| Criterion |  Decision Making Wideband Delphi |  DevOps Blameless Postmortem |  Operations After-Action Review |
|---|---|---|---|
Purposedifferent | 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. | 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 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. |
Complexitydifferent | High | Medium | Low |
Timedifferent | 1-4 h or multiple rounds | 30-90 min | 20-45 min |
Participantsdifferent | 4-12 Experten | 3-12 | 3-12 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Estimate Range, Assumption Log, Expert Consensus Notes | Postmortem Doc, Action Items, Timeline | Lessons learned, Action items, Event summary |
Tagsno overlap | EstimationExpertsForecasting | Site Reliability EngineeringIncidentLearningReliability | LearningOperationsImprovement |
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