About This Architecture

Three-tier AWS architecture separating web, application, and database layers across public and private subnets within a VPC. Internet traffic flows through an Application Load Balancer to EC2 instances managed by Auto Scaling Group in the application tier. The database tier uses RDS PostgreSQL with read replica for high availability, while S3 serves static assets. This pattern demonstrates AWS best practices for fault tolerance, horizontal scaling, and network isolation. Fork this diagram on Diagrams.so to customize instance types, add caching layers, or adapt for your workload.

People also ask

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

Use a VPC with public subnets for Application Load Balancer and private subnets for EC2 application tier and RDS database tier. This diagram shows Auto Scaling EC2 instances connecting to RDS PostgreSQL with read replica and S3 for static assets.