This project deploys a highly available, scalable 3-Tier Web Architecture on AWS using Terraform. It includes a public-facing Frontend, a private Backend, and a Bastion host for secure access.

• VPC: Custom VPC with Public and Private subnets across 2 Availability Zones.
• Compute:
  • Frontend: Auto Scaling Group (ASG) with Application Load Balancer (ALB).
  • Backend: Auto Scaling Group (ASG) with Internal Load Balancer.
  • Bastion Host: For secure SSH access to private instances.
• Security: Tightly scoped Security Groups (ALB $\to$ Frontend $\to$ Backend).
• Scaling: Dynamic scaling policies based on CPU utilization.

• Terraform installed (v1.0+).
• AWS CLI installed and configured with your credentials.
• PowerShell (for the S3 setup script).

Run this script to create the S3 bucket for storing Terraform state.

Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass
./s3-script.ps1

terraform init
terraform plan
terraform apply

sudo yum update -y

sudo yum install -y stress

stress --cpu 2 --timeout 600

sudo systemctl stop httpd