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| Criterion |  DevOps Blameless Postmortem |  Facilitation Dot Voting |  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 a workshop has produced too many options and the group needs to condense quickly, dot voting makes preferences visible in a short time. It bundles individual votes into a solid signal for the next selection. | 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. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-90 min | 5-15 min | 60-120 min |
Participantsdifferent | 3-12 | 3-20 | 5-12 |
Formatdifferent | Workshop + async | Workshop | Workshop |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Ranked list, Consensus signal, Shortlist | Ranked Ideas, Clarified Options, Group Priority |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | FacilitationVotingConsensusPrioritization | FacilitationPrioritizationVotingInclusion |
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