About This Architecture

Classic three-tier AWS architecture with ALB distributing HTTPS traffic across Auto Scaling EC2 instances in private subnets. Application tier connects to RDS PostgreSQL with read replica for query offloading, while static assets serve from S3. This pattern demonstrates AWS best practices for high availability, security isolation, and horizontal scaling. Fork this diagram on Diagrams.so to customize instance types, add CloudFront, or adapt for your workload. VPC segmentation keeps databases isolated from direct internet exposure.

People also ask

How do I design a three-tier web application architecture on AWS with load balancing and database replication?

Use ALB in public subnets to distribute traffic to Auto Scaling EC2 instances in private subnets. Connect to RDS PostgreSQL with a read replica for scalability, and serve static assets from S3.