Getting Started with Terraform on AWS: Infrastructure as Code the Right Way

A practical guide to setting up Terraform and AWS CLI on Ubuntu — from zero Why you should Start Caring About Infrastructure as Code Let me paint a picture that might sound familiar. You're deploying an application. You spin up an EC2 instance manually through the AWS console, configure a security group, set up an S3 bucket, tweak some IAM permissions — and everything works. Two weeks later, you need to do the exact same thing for a staging environment. You click through the console again, trying to remember every setting you configured the first time. Did you allow port 443? Which AMI did you use? Why is staging behaving differently from production? Sound familiar? That's exactly the problem Infrastructure as Code (IaC) solves — and it's why I decided to get serious about Terraform. What Is Infrastructure as Code, Really? It is exactly what it sounds like — instead of manually clicking through consoles or running one-off commands to provision your infrastructure, you write code that d