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| Criterion |  Architecture C4 Model |  Operations Kepner-Tregoe |  Operations ALPEN Method |
|---|---|---|---|
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. | 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. | 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. |
Complexitydifferent | Low | High | Low |
Timedifferent | 1-4 h | 2-8 h | 10-20 min daily |
Participantsdifferent | 1-5 | 2-8 | 1 |
Formatdifferent | Workshop + async | Workshop + async | Async |
Outputdifferent | Context Diagram, Container Diagram, Component Diagram | Problem Analysis, Decision Analysis, Risk Plan | Daily Plan, Time Estimates, Review Notes |
Tagsno overlap | ArchitectureCommunicationVisualization | Problem solvingRoot causeDecisionOperations | PlanningTime managementProductivityOperations |
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