🚀 Terraform AWS 3-Tier Platform

Terraform • AWS • Docker • EC2 • VPC • Infrastructure as Code

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📌 Project Overview

This project demonstrates how to build a modular AWS infrastructure using Terraform and Infrastructure as Code (IaC) principles.

The platform provisions:

• AWS VPC
• Public and Private Subnets
• Internet Gateway
• Route Tables
• Security Groups
• Frontend EC2 Instance
• Backend EC2 Instance
• Dockerized Application Stack
• Reusable Terraform Modules

The goal of this project is to showcase cloud infrastructure design, Terraform best practices, modular architecture, and AWS networking fundamentals.

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🏗️ Architecture Diagram

Architecture Flow

Internet
    │
Internet Gateway
    │
VPC (10.0.0.0/16)
│
├── Public Subnet (10.0.1.0/24)
│     └── Frontend EC2
│            └── Dockerized Nginx
│            └── Port 8080
│
└── Private Subnet (10.0.11.0/24)
      └── Backend EC2
             └── Dockerized API
             └── Port 3000

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⚙️ Technology Stack

Technology	Purpose
Terraform	Infrastructure as Code
AWS EC2	Compute Resources
AWS VPC	Networking
Security Groups	Access Control
Docker	Containerization
Nginx	Frontend Web Server
Ubuntu Linux	Operating System

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📂 Repository Structure

terraform-aws-3tier-platform/
├── diagrams/
│   ├── terraform-aws-3tier-platform.drawio
│   ├── terraform-aws-3tier-platform.png
│   └── terraform-aws-3tier-platform.svg
│
├── modules/
│   ├── ec2/
│   ├── security-groups/
│   └── vpc/
│
├── screenshots/
│
├── main.tf
├── provider.tf
├── variables.tf
├── outputs.tf
├── versions.tf
└── README.md

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🧩 Terraform Modules

VPC Module

Responsible for:

• VPC Creation
• Public Subnet
• Private Subnet
• Internet Gateway
• Route Tables

Security Groups Module

Responsible for:

• Frontend Security Group
• Backend Security Group
• Access Rules

EC2 Module

Responsible for:

• Frontend EC2 Instance
• Backend EC2 Instance
• Instance Networking

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🚀 Deployment

Initialize Terraform

terraform init

Validate Configuration

terraform validate

Create Execution Plan

terraform plan

Deploy Infrastructure

terraform apply

Destroy Infrastructure

terraform destroy

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📊 Deployment Proof

Terraform Apply

AWS Resources

Security Groups

Frontend Application

Backend API

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🔐 Security Design

Implemented security controls:

• SSH Access via Key Pair Authentication
• Frontend Service exposed on Port 8080
• Backend Service restricted to internal communication
• Security Group based traffic control
• Infrastructure resources isolated within custom VPC

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📤 Terraform Outputs

The project exposes useful deployment information:

• VPC ID
• Public Subnet ID
• Private Subnet ID
• Frontend Public IP
• Frontend Private IP
• Backend Private IP

View outputs:

terraform output

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📚 Complete Project Walkthrough

Read the full technical article:

🌐 Website Article

https://devriston.com.pk/blog/terraform-aws-3tier-platform.html

📝 Dev.to

https://dev.to/muhammadkamrankabeeross

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📖 Additional Documentation

Interview preparation notes:

docs/interview-guide.md

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🧠 Future Improvements

• Application Load Balancer (ALB)
• Auto Scaling Groups (ASG)
• S3 Remote Backend
• DynamoDB State Locking
• GitHub Actions CI/CD
• AWS CloudWatch Monitoring
• RDS Database Tier
• Multi-Environment Deployment

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👨‍💻 Author

Muhammad Kamran Kabeer

DevOps Engineer focused on Cloud Infrastructure, Linux, Terraform, AWS, Automation, and Infrastructure as Code.

🌐 Website: https://devriston.com.pk

📝 Dev.to: https://dev.to/muhammadkamrankabeeross

🐙 GitHub: https://github.com/muhammadkamrankabeer-oss

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⭐ Support

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