About This Architecture

Multi-AZ AWS architecture for a secure cash deposit machine system integrating on-site hardware with cloud-based transaction processing and compliance. The machine controller communicates via VPN and IoT Core MQTT to AWS, routing deposit requests through WAF, CloudFront, API Gateway, and Cognito to load-balanced ECS services across two availability zones. ECS Deposit Service instances validate transactions via Lambda, queue them in SQS, and persist data in RDS Primary/Standby with DynamoDB replication and ElastiCache sessions for high availability. Tamper sensors and cameras feed CloudWatch metrics triggering SNS alerts, while audit logs and receipts archive to S3 for compliance. This architecture demonstrates defense-in-depth security, geographic redundancy, and real-time monitoring essential for financial hardware systems. Fork and customize this diagram on Diagrams.so to adapt subnets, instance types, or regional endpoints for your deployment.

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How do you architect a secure, highly available cash deposit machine system on AWS with IoT connectivity and multi-AZ failover?

This diagram shows a production-grade AWS design using IoT Core MQTT for machine-to-cloud communication, ECS Deposit Service across two AZs for transaction processing, RDS Primary/Standby for database failover, and DynamoDB replication for distributed state. CloudWatch and SNS provide real-time alerts on tamper sensors and system health, while WAF, Cognito, and VPN encryption enforce security at e