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| Criterion |  Architecture C4 Model |  Systems Thinking Current Reality Tree |  Architecture arc42 |  Operations Causal Factor Analysis |
|---|---|---|---|---|
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. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. | 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. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. |
Complexitydifferent | Low | High | Low | High |
Timedifferent | 1-4 h | 2-6 h | 1-2 Tage | 2-6 h |
Participantsdifferent | 1-5 | 3-8 | 1-4 | 3-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Current Reality Tree, Core Problems, Intervention Ideas | Architecture Document, Context View, Runtime View, Deployment View | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tagsno overlap | ArchitectureCommunicationVisualization | Systems thinkingRoot causeConstraintsCausality | ArchitectureDocumentationCommunication | CausalityIncidentRoot causeTimeline |