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| Criterion |  Architecture C4 Model |  DevOps Blameless Postmortem |  DevOps Incident Command |
|---|---|---|---|
Purposedifferent | The C4 Model makes a system legible across several resolution levels, from context down to code. It suits situations where different audiences need to understand the same architecture from different altitudes. | 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. | 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. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 1-4 h | 30-90 min | As needed |
Participantsdifferent | 1-5 | 3-12 | 4-15 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Postmortem Doc, Action Items, Timeline | Incident Log, Action Tracker, Stakeholder Updates |
Tagsno overlap | ArchitectureCommunicationVisualization | Site Reliability EngineeringIncidentLearningReliability | IncidentOperationsReliability |
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