Multi-tier e-commerce information system on AWS spanning two availability zones with CloudFront CDN, WAF, and Route 53 DNS protecting customer, admin, and seller traffic. Application tier uses ALB routing to EC2 instances running Product, Order, Inventory, and Report modules, with Lambda functions handling User Auth, Payment, and Notification logic via API Gateway and SQS. Data tier features RDS MySQL primary-standby replication across AZ-1 and AZ-2, ElastiCache Redis for session caching, DynamoDB for session storage, and S3 for product images, all monitored by CloudWatch and secured via IAM. This architecture demonstrates high availability, fault tolerance, and separation of concerns across compute, storage, and messaging services. Fork and customize this diagram on Diagrams.so to adapt the module distribution, instance types, or database configuration for your specific transaction volume and latency requirements.