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| Criterion |  DevOps Blameless Postmortem |  Facilitation Nominal Group Technique |
|---|---|---|
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. | When loud voices could dominate a round, Nominal Group Technique protects individual thinking time from group effects. It collects ideas separately first and only then enables shared weighting. |
Complexitysame | Medium | Medium |
Timedifferent | 30-90 min | 60-120 min |
Participantsdifferent | 3-12 | 5-12 |
Formatdifferent | Workshop + async | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Ranked Ideas, Clarified Options, Group Priority |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | FacilitationPrioritizationVotingInclusion |
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