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| Criterion |  Operations Runbook |  Architecture C4 Model |  DevOps Blameless Postmortem |  Architecture arc42 |
|---|---|---|---|---|
Purposedifferent | For recurring operational tasks or incidents, the method keeps solid action logic ready. It reduces uncertainty when time pressure, role changes, or rare situations demand fast access. | 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. | arc42 structures architecture knowledge so teams can document system, decisions, and risks consistently. The template builds a living understanding of the architecture instead of scattered notes. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 20-60 min | 1-4 h | 30-90 min | 1-2 Tage |
Participantsdifferent | 1-4 | 1-5 | 3-12 | 1-4 |
Formatdifferent | Async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Runbook, Checklist, Escalation Path | Context Diagram, Container Diagram, Component Diagram | Postmortem Doc, Action Items, Timeline | Architecture Document, Context View, Runtime View, Deployment View |
Tagsno overlap | OperationsReliabilityDocumentation | ArchitectureCommunicationVisualization | Site Reliability EngineeringIncidentLearningReliability | ArchitectureDocumentationCommunication |