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| Criterion |  Architecture C4 Model |  Operations ALPEN Method |  Operations Kepner-Tregoe |
|---|---|---|---|
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. | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | Low | Low | High |
Timedifferent | 1-4 h | 10-20 min daily | 2-8 h |
Participantsdifferent | 1-5 | 1 | 2-8 |
Formatdifferent | Workshop + async | Async | Workshop + async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Daily Plan, Time Estimates, Review Notes | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | ArchitectureCommunicationVisualization | PlanningTime managementProductivityOperations | Problem solvingRoot causeDecisionOperations |
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