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| Criterion |  DevOps Blameless Postmortem |  Facilitation 1-2-4-All |  DevOps Incident Timeline Analysis |
|---|---|---|---|
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 many people in a group too rarely get to speak, 1-2-4-All distributes thinking time more fairly. The format builds participation step by step and makes quiet or still-unformed thoughts usable faster. | For an incident with an unclear sequence, the method makes the timeline precisely visible. It separates perception, reaction, and delay so cause and effect become more clearly readable. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 30-90 min | 10-20 min | 60-180 min |
Participantsdifferent | 3-12 | 4-100+ | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Idea List, Shared Insights, Emergent Themes | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | FacilitationInclusionIdeation | IncidentTimelineSite Reliability Engineering |
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