Infrastructure as Code with Terraform

Managing cloud infrastructure manually is error-prone and doesn't scale. Terraform provides a declarative way to define, provision, and manage infrastructure.

Getting Started

provider "aws" {
  region = "us-east-1"
}
resource "aws_instance" "web" {

  ami           = "ami-0c55b159cbfafe1f0"

  instance_type = "t3.micro"
tags = {

    Name = "web-server"

  }

}

State Management

Always use remote state in production:

terraform {
  backend "s3" {
    bucket = "my-terraform-state"
    key    = "prod/terraform.tfstate"
    region = "us-east-1"
  }
}

Best Practices

• Version pin your providers and modules

• Use workspaces for environment separation

• Plan before apply — always review changes

• Tag everything for cost tracking

Conclusion

Terraform transforms infrastructure management from a manual process into a repeatable, version-controlled workflow.