AWS Three-Tier Web Application Architecture
About This Architecture
Three-tier AWS architecture separating web, application, and database layers within a VPC for security and scalability. Internet users connect via HTTPS to an Application Load Balancer distributing traffic across three EC2 instances (t3.medium) in an Auto Scaling Group within a private application subnet. The application tier performs read/write operations to an RDS PostgreSQL Primary (db.t3.large) with a Read Replica for read-only queries, while static assets are served from an S3 Bucket. Fork this diagram on Diagrams.so to customize instance types, add CloudFront, or export as .drawio for your documentation.
People also ask
How do I design a three-tier web application architecture on AWS with high availability?
Use a VPC with public subnet for ALB, private subnets for EC2 Auto Scaling Group and RDS PostgreSQL with read replica. This diagram shows the pattern with S3 for static assets.
- Domain:
- Cloud Aws
- Audience:
- AWS solutions architects designing scalable web applications
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