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| Criterion |  DevOps Blameless Postmortem |  Operations 5 Whys |  Decision Making OODA Loop |  Operations Kepner-Tregoe |
|---|---|---|---|---|
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. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | In dynamic situations, decisions become outdated faster than they can be prepared. The OODA Loop holds observing, orienting, deciding, and acting together as a recurring rhythm so reaction does not slide into inertia. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | Medium | Low | Medium | High |
Timedifferent | 30-90 min | 15-30 min | 15-60 min je Zyklus | 2-8 h |
Participantsdifferent | 3-12 | 2-6 | 1-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Root cause notes, Countermeasures | Situation Assessment, Decision Loop, Action Updates | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | Root causeIncidentLeanProblem solving | DecisionChangeLearningStrategy | Problem solvingRoot causeDecisionOperations |