View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  DevOps Incident Timeline Analysis |  Decision Making Pre-Mortem |  Decision Making Assumption Surfacing |  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. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | 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 | Low | Medium |
Timedifferent | 60-180 min | 20–45 min | 45-90 min | 30-90 min |
Participantsdifferent | 3-10 | Small cross-functional group | 2-8 | 3-12 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | Risk list, Mitigation plan, Assumption log | Assumption List, Critical Assumptions, Learning Plan | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | IncidentTimelineSite Reliability Engineering | RiskDecisionFailurePlanning | AssumptionsRiskDecisionDiscovery | Site Reliability EngineeringIncidentLearningReliability |