Enterprise Architecture Diagrams That Actually Scale

Your service is down. Latency spiked to 30 seconds. You pull up the architecture wiki, desperate to trace the failure path, and find... a messy Visio death-star from 2019. Zero boundaries. Arrows crossing everywhere. No data flows labeled. You are flying blind. Table of Contents The C4 Model Is Your Foundation The Blast Radius Diagram Data Flow Over Static Boxes State Machines for Complex Domains Visual Workflows for AI Infrastructure The Diagram-as-Code Mandate Trade-offs and Considerations Key