Veritas Kanban is a modular, local-first React/Vite application fronted by CloudFront CDN, WAF, and ALB, with a pluggable architecture supporting CLI tools, MCP servers, and agent orchestration. Traffic flows through dual availability zones with ECS Fargate services, Lambda handlers, and EC2 workflow engines backed by RDS Primary/Standby and DynamoDB Global Tables. This architecture demonstrates how to build extensible, event-driven platforms with optional add-on layers while maintaining high availability and governance across distributed teams. Fork this diagram on Diagrams.so to customize subnets, instance types, or add your own modular integrations. The design balances local-first UX with centralized workflow orchestration and multi-region data replication.