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| Criterion |  Operations Bottleneck Analysis |  Architecture C4 Model |  Engineering Kanban |  Architecture Architecture Communication Canvas |
|---|---|---|---|---|
Purposedifferent | For a flow that backs up at one point, the method looks for the capacity limit with the greatest leverage. It explains why extra effort elsewhere barely improves throughput. | 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. | When work sits in too many parallel streams, throughput suffers and no one sees the bottlenecks. Kanban makes the flow of work visible and limits overload so a system becomes calmer and more predictable. | The Architecture Communication Canvas plans architecture communication so the right people receive the right message. The method turns technical complexity into deliberate communication design. |
Complexitydifferent | Medium | Low | Medium | Medium |
Timedifferent | 1-3 h | 1-4 h | Ongoing | 60-120 min |
Participantsdifferent | 3-8 | 1-5 | 2-12 | 2-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Bottleneck Map, Flow Metrics, Improvement Options, Follow-up Measures | Context Diagram, Container Diagram, Component Diagram | Kanban board, WIP policies, Flow metrics | Communication Canvas, Stakeholder Messages, Architecture Communication Plan |
Tagsno overlap | FlowMeasurementConstraints | ArchitectureCommunicationVisualization | FlowVisual managementDelivery | ArchitectureCommunicationStakeholdersCanvas |