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| Criterion |  Architecture C4 Model |  Architecture Architecture Communication Canvas |  DevOps Blameless Postmortem |
|---|---|---|---|
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. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. | 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. |
Complexitydifferent | Low | Medium | Medium |
Timedifferent | 1-4 h | 60-120 min | 30-90 min |
Participantsdifferent | 1-5 | 2-8 | 3-12 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Communication Canvas, Stakeholder Messages, Architecture Communication Plan | Postmortem Doc, Action Items, Timeline |
Tagsno overlap | ArchitectureCommunicationVisualization | ArchitectureCommunicationStakeholdersCanvas | Site Reliability EngineeringIncidentLearningReliability |
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