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| Criterion |  Decision Making Delphi Method |  Operations After-Action Review |  DevOps Blameless Postmortem |  Product Strategy DIBB |
|---|---|---|---|---|
Purposedifferent | When knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. | 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. | DIBB helps clarify target groups, value, goals, and priorities by making the logic behind a decision explicit. It captures results as a DIBB document, belief list, bet list, and learning report. |
Complexitydifferent | High | Low | Medium | Low |
Timedifferent | 1-4 Wochen | 20-45 min | 30-90 min | 1-2 h |
Participantsdifferent | 6-30 Experten | 3-12 | 3-12 | 2-8 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Expert Forecast, Consensus Range, Assumption Notes | Lessons learned, Action items, Event summary | Postmortem Doc, Action Items, Timeline | DIBB document, Belief list, Bet list, Learning report |
Tagsno overlap | ForecastingExpertsDecisionStrategy | LearningOperationsImprovement | Site Reliability EngineeringIncidentLearningReliability | StrategyDecisionAssumptionsHypothesis |