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AWS · web application · cloud architecture

AWS Three-Tier Web Application

This AWS architecture diagram separates a public web application into edge, web, application and data tiers. Internet traffic reaches Amazon CloudFront, then an Application Load Balancer and an EC2 web tier. The web tier calls an EC2 application tier, which stores relational data in Amazon RDS and files in Amazon S3. The drawing gives teams a compact way to discuss traffic flow and responsibility boundaries before adding more detailed networking controls.

Type Network topologyStandard Cisco-convention topology iconsEngine schematex-networkUpdated 9/24/2026
AWS Three-Tier Web Application
Drawing preview
The request

“Create an AWS three-tier web application with Internet through Amazon CloudFront and an Application Load Balancer to EC2 web and application tiers, with Amazon RDS and Amazon S3 connected to the application tier.”

Then tryAdd a second EC2 web tier instance.Add Amazon ElastiCache connected to the application tier.
What is in this drawing

Read the decisions behind it.

01Edge delivery

CloudFront receives public HTTPS requests.

02Traffic distribution

The Application Load Balancer routes requests to the web tier.

03Separated data

The application tier uses RDS and S3 for different storage needs.

Use this as a simple three-tier starting point for an AWS web application.

More like this

Other examples in this family.

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AWS Three-Tier Web ApplicationAWSOpen →
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Azure Web App with Front DoorAzureOpen →
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GCP Three-Tier Web ApplicationGoogle CloudOpen →

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FAQ

Common questions

What are the three tiers?

The web tier receives requests, the application tier runs application logic, and the data tier stores application data.

Why place CloudFront at the edge?

CloudFront receives public web requests before they continue to the application load balancer.

What storage services are shown?

The example uses Amazon RDS for relational data and Amazon S3 for files.