About This Architecture

Three-tier AWS architecture separating web, application, and database layers within a VPC for security and scalability. Internet traffic flows through an Application Load Balancer to EC2 instances in an Auto Scaling Group across private subnets. The database tier uses RDS PostgreSQL with a read replica for high availability, while S3 handles static assets. This pattern demonstrates AWS best practices for fault-tolerant, cost-effective web applications. Fork this diagram on Diagrams.so to customize subnet configurations or add CloudFront for global CDN.

People also ask

How do I design a three-tier web application architecture on AWS?

Use a VPC with public subnets for an Application Load Balancer, private subnets for Auto Scaling EC2 instances, and a separate database tier with RDS PostgreSQL and read replicas. This diagram shows the complete pattern with S3 for static assets.