Multi-AZ ERP microservices architecture on AWS with CloudFront CDN, AWS WAF, and Route 53 routing traffic through dual Application Load Balancers to seven core microservices: Finance, HR, Procurement, Sales, Inventory, Manufacturing, and Reporting. Each AZ spans public, gateway, application, and messaging subnets, with API Gateway and Cognito handling authentication, while SQS, SNS, EventBridge, and MSK Kafka orchestrate asynchronous workflows across services. The data layer integrates RDS Aurora primary-replica, DynamoDB for sessions, DocumentDB for unstructured data, ElastiCache Redis for caching, OpenSearch for search, and analytics via Redshift, Athena, AWS Glue ETL, and Timestream for IoT metrics. This architecture demonstrates high availability, fault isolation, and enterprise-grade security with AWS Shield, Secrets Manager, and IAM governance across both availability zones. Fork and customize this diagram on Diagrams.so to adapt subnets, add additional microservices, or adjust data store configurations for your ERP deployment. Consider adding VPC Flow Logs and GuardDuty for enhanced threat detection in production environments.