Terraform Infrastructure

Terraform Infrastructure

Table of Contents

• Overview
• When to Use
• Quick Start
• Reference Guides
• Best Practices

Overview

Build scalable infrastructure as code with Terraform, managing AWS, Azure, GCP, and on-premise resources through declarative configuration, remote state, and automated provisioning.

When to Use

• Cloud infrastructure provisioning
• Multi-environment management (dev, staging, prod)
• Infrastructure versioning and code review
• Cost tracking and resource optimization
• Disaster recovery and environment replication
• Automated infrastructure testing
• Cross-region deployments

Quick Start

Minimal working example:

# terraform/main.tfterraform {  required_version = ">= 1.0"
  required_providers {    aws = {      source  = "hashicorp/aws"      version = "~> 5.0"    }  }
  # Remote state configuration  backend "s3" {    bucket         = "terraform-state-prod"    key            = "prod/terraform.tfstate"    region         = "us-east-1"    encrypt        = true    dynamodb_table = "terraform-locks"  }}
provider "aws" {  region = var.aws_region
  default_tags {// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Best Practices

✅ DO

• Use remote state (S3, Terraform Cloud)
• Implement state locking (DynamoDB)
• Organize code into modules
• Use workspaces for environments
• Apply tags consistently
• Use variables for flexibility
• Implement code review before apply
• Keep sensitive data in separate variable files

❌ DON'T

• Store state files locally in git
• Use hardcoded values
• Mix environments in single state
• Skip terraform plan review
• Use root module for everything
• Store secrets in code
• Disable state locking