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| Criterion |  DevOps Incident Timeline Analysis |  Facilitation Dot Estimation |  Decision Making PERT Estimation |  DevOps Blameless Postmortem |
|---|---|---|---|---|
Purposedifferent | 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. | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk 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. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 60-180 min | 5-20 min | 15-45 min | 30-90 min |
Participantsdifferent | 3-10 | 3-20 | 1-8 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | Effort Heatmap, Risk Signals, Discussion Targets | PERT Estimate, Expected Value, Risk Notes | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | IncidentTimelineSite Reliability Engineering | EstimationEffortRisk | EstimationUncertaintyRisk | Site Reliability EngineeringIncidentLearningReliability |