Multi-AZ microservices architecture for e-commerce platforms using AWS ECS, Lambda, RDS, and DynamoDB across two availability zones. User, Product, Order, and Payment services run in ECS containers and Lambda functions behind an Application Load Balancer, with traffic filtered through WAF and accelerated by CloudFront CDN. RDS Primary and Standby instances provide synchronous replication for transactional data, while DynamoDB and its replica handle product catalogs with eventual consistency. This design eliminates single points of failure, distributes load across AZs, and ensures business continuity during zone-level outages—critical for mission-critical e-commerce workloads. Fork this diagram on Diagrams.so to customize subnets, instance types, or add additional services like notifications or analytics. Consider adding Auto Scaling policies and cross-region replication for global e-commerce deployments.