Event-driven microservices architecture on AWS using Lambda, EventBridge, and RDS with independent bounded contexts for Orders, Payments, and Inventory services. Traffic flows through CloudFront and WAF to API Gateway, which routes requests to Lambda functions that publish events to EventBridge for asynchronous processing via SQS and SNS. Each service integrates with shared infrastructure including Route 53 service discovery, Systems Manager configuration, Secrets Manager encryption, CloudWatch monitoring, and X-Ray distributed tracing to ensure observability and security. This pattern decouples services through event-driven communication while maintaining strong data consistency via RDS with read replicas and ElastiCache session caching. Fork this diagram on Diagrams.so to customize service boundaries, add additional Lambda functions, or adapt the event routing topology for your domain model. The architecture demonstrates AWS best practices for scalable, loosely-coupled microservices with centralized observability and security controls.