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3-Tier Architecture with CloudFormation

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3-Tier Architecture with CloudFormation

Architecting a Three-Tier LAMP Application on AWS using CloudFormation for Infrastructure as Code.

This project demonstrates a production-ready three-tier web application architecture deployed on AWS using CloudFormation. The architecture follows best practices for high availability, scalability, and security, implementing a classic LAMP stack across presentation, application, and database tiers.

By using CloudFormation templates, the entire infrastructure is defined as code, making it reproducible, version-controlled, and easy to manage across different environments.

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What it is

A highly available three-tier web application architecture deployed on AWS:

  • Presentation Tier: Web servers running behind an Application Load Balancer for high availability.
  • Application Tier: EC2 instances running the LAMP stack (Linux, Apache, MySQL, PHP) in private subnets.
  • Database Tier: Amazon RDS MySQL database with Multi-AZ deployment for redundancy.
  • Network Architecture: Custom VPC with public and private subnets across multiple Availability Zones.

Key Technical Details

  • Infrastructure as Code: Complete infrastructure defined using AWS CloudFormation templates.
  • High Availability: Multi-AZ deployment with resources distributed across multiple Availability Zones.
  • Security: Application servers in private subnets, security groups controlling traffic flow, and NAT gateways for outbound internet access.
  • Scalability: Auto Scaling groups for the application tier to handle varying loads.
  • Load Balancing: Application Load Balancer distributing traffic across multiple application instances.
  • Database: Amazon RDS MySQL with automated backups and Multi-AZ deployment for disaster recovery.

What I Learned

  • Architecture Patterns: Understanding and implementing the three-tier architecture pattern for web applications.
  • CloudFormation: Advanced CloudFormation concepts including nested stacks, intrinsic functions, and resource dependencies.
  • Network Design: Designing secure VPC architectures with proper subnet segregation and routing.
  • High Availability: Implementing HA patterns using Multi-AZ deployments and load balancing.
  • Infrastructure as Code: Benefits of defining infrastructure declaratively for repeatability and version control.

Screenshots

3-Tier Architecture Diagram
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