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| Criterion |  Delivery Communication Plan |  DevOps Blameless Postmortem |  Operations Root Cause Analysis |
|---|---|---|---|
Purposedifferent | When many people need to be informed in parallel and messages would otherwise arrive unevenly or too late, a Communication Plan orders communication reliably. Channels, audiences, and cadences interlock so important information doesn't get lost. | 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 a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 45-90 min | 30-90 min | 1-4 h |
Participantsdifferent | 2-6 | 3-12 | 3-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Communication Plan, Channel Matrix, Message Cadence | Postmortem Doc, Action Items, Timeline | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | CommunicationStakeholdersDeliveryPlanning | Site Reliability EngineeringIncidentLearningReliability | Root causeProblem solvingQualityIncident |
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