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| Criterion |  Architecture C4 Model |  Decision Making Eisenhower Matrix |  Operations Root Cause Tree Analysis |  Operations 5 Whys |
|---|---|---|---|---|
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. | It separates true priorities from noise so it becomes clear what should be done now, scheduled, delegated, or dropped. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Low | Low | Medium | Low |
Timedifferent | 1-4 h | 15-30 min | 1-3 h | 15-30 min |
Participantsdifferent | 1-5 | 1-6 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Eisenhower Matrix, Action List, Delegation Notes | Cause Tree, Evidence Notes, Countermeasures | Root cause notes, Countermeasures |
Tagsno overlap | ArchitectureCommunicationVisualization | PrioritizationFocusTasks | Root causeTreeIncidentQuality | Root causeIncidentLeanProblem solving |