Three-tier AWS web application with WAF protection, Application Load Balancer, and Auto Scaling Group distributing traffic across EC2 t3.medium instances in multiple availability zones. User requests flow through WAF and ALB to application servers in private subnets, while static assets are served from S3 and database queries route to RDS Primary with read replica failover. This architecture demonstrates high availability, auto-scaling elasticity, and security best practices using public/private subnet isolation across AZ-1 and AZ-2. Fork this diagram on Diagrams.so to customize instance types, scaling policies, or add additional services like CloudFront or ElastiCache. The multi-AZ RDS setup with read replica ensures database resilience while Auto Scaling Group maintains application performance during traffic spikes.