Multi-AZ microservices architecture on AWS using ECS Fargate, API Gateway, and App Mesh for service-to-service communication across four containerized services. Traffic flows through WAF and CloudFront CDN to API Gateway, which routes requests to Service A, B, C, and D running in private subnets with App Mesh sidecars for observability and traffic management. Services integrate with SQS, SNS, Aurora (primary/standby), DynamoDB, and ElastiCache, while CloudWatch and X-Ray provide monitoring and distributed tracing across availability zones us-east-1a and us-east-1b. This pattern demonstrates high-availability microservices with decoupled messaging, multi-database strategy, and comprehensive observability. Fork and customize this diagram on Diagrams.so to match your service topology, add additional services, or adjust subnet CIDR blocks for your VPC design.