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| Criterion |  DevOps ChatOps |  DevOps Blameless Postmortem |  Operations 5 Whys |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | For operational work in a distributed team, the method links communication with direct system control. It records decisions right where the signal, the context, and the execution come together. | 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | Ongoing | 30-90 min | 15-30 min | 1-6 Wochen |
Participantsdifferent | 2-20 | 3-12 | 2-6 | 4-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Chat Transcript, Action Log, Automations | Postmortem Doc, Action Items, Timeline | Root cause notes, Countermeasures | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | CollaborationEngineeringIncident | Site Reliability EngineeringIncidentLearningReliability | Root causeIncidentLeanProblem solving | QualityProblem solvingRoot cause |