Written as a real-world DevOps case study — clear and professional.

Introduction

Managing cloud infrastructure manually can quickly become complex and error-prone — especially when deploying multiple environments like staging, QA, and production. As a DevOps Engineer, I wanted a faster, consistent, and more reliable way to deploy AWS resources. That’s when I turned to Terraform, an open-source Infrastructure-as-Code (IaC) tool that lets you automate and version-control your entire infrastructure.

In this post, I’ll walk you through how I used Terraform to automate AWS provisioning, reduce setup time by 80%, and eliminate configuration drift across environments.

Why Terraform for AWS?

• Declarative: You define what infrastructure you want, not how to build it.
• Idempotent: Running the same code multiple times produces the same result.
• Multi-cloud: Works seamlessly across AWS, Azure, and GCP.
• Version-controlled: Integrates easily with Git for tracking changes.

For AWS, Terraform supports nearly every service — from EC2 and S3 to VPCs, RDS, and IAM roles — through official providers.

Project Overview

• A VPC with public and private subnets
• EC2 instances for the web application
• An RDS MySQL database in a private subnet
• Security groups for controlled access
• S3 bucket for storing static files