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| Criterion |  DevOps Incident Timeline Analysis |  Product Discovery Assumption Mapping |  DevOps Blameless Postmortem |  Decision Making Assumption Surfacing |
|---|---|---|---|---|
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 assumptions still sit unordered in the room, it weighs uncertainty against leverage. It makes visible which hypotheses should be checked first. | 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. | 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. |
Complexitydifferent | Medium | Medium | Medium | Low |
Timedifferent | 60-180 min | 45-60 min | 30-90 min | 45-90 min |
Participantsdifferent | 3-10 | 2-8 | 3-12 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Incident Timeline, Evidence Log, Delay Analysis, Improvement Actions | Assumption map, Test backlog, Risk ranking | Postmortem Doc, Action Items, Timeline | Assumption List, Critical Assumptions, Learning Plan |
Tagsno overlap | IncidentTimelineSite Reliability Engineering | AssumptionsRiskExperimentsValidation | Site Reliability EngineeringIncidentLearningReliability | AssumptionsRiskDecisionDiscovery |