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| Criterion |  DevOps Blameless Postmortem |  Delivery Value Stream Mapping |  DevOps Incident Command |  Operations A3 Problem Solving |
|---|---|---|---|---|
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. | When delivery work dissolves into wait times, handoffs, and hidden effort, Value Stream Mapping makes the actual flow visible. The method exposes bottlenecks, idle time, and feedback loops so lead time and improvement levers become tangible. | During an acute incident with several people involved, the method creates a clear leadership and communication structure. It reduces chaos when fast coordination and clean situational awareness are both needed at once. | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitysame | Medium | Medium | Medium | Medium |
Timedifferent | 30-90 min | 1-3 h | As needed | 45-90 min |
Participantsdifferent | 3-12 | 4-10 | 4-15 | 2-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Postmortem Doc, Action Items, Timeline | Current-state map, Future-state map, Bottleneck list | Incident Log, Action Tracker, Stakeholder Updates | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Site Reliability EngineeringIncidentLearningReliability | LeanFlowWasteDelivery | IncidentOperationsReliability | LeanProblem solvingCoachingOperations |