What is Infrastructure as Code (IaC)?

What is Infrastructure as Code?

Infrastructure as Code (IaC) is the practice of managing infrastructure using code instead of manual setup. Instead of clicking through cloud consoles, you define servers, networks, and cloud resources in configuration files that can be version-controlled and automated.

Why is IaC important in DevOps?

IaC ensures:

• Consistency - Same infrastructure across dev, staging, and production
• Faster provisioning - Deploy infrastructure in minutes, not hours
• Easy rollback - Revert to previous infrastructure states quickly
• Reduced human errors - Automated deployments eliminate manual mistakes

Which tools are used for IaC?

Popular IaC tools:

• Terraform - Cloud-agnostic, works with AWS, Azure, GCP
• AWS CloudFormation - AWS-specific infrastructure management
• Pulumi - Modern IaC using programming languages

Is Terraform mandatory for DevOps?

Yes. Terraform is one of the most demanded DevOps skills today. Almost every company using cloud infrastructure requires Terraform knowledge. It's essential for managing multi-cloud environments and is a must-have skill for DevOps engineers.