What is Infrastructure as Code and Why It's Transforming DevOps

What IaC is and the problem it solves Infrastructure as Code (IaC) is the practice of managing and provisioning infrastructure (servers, networks, databases, etc.) using code instead of manual processes. It solves several key problems: Manual errors → reduces human mistakes from repetitive tasks Inconsistency (configuration drift) → ensures all environments are identical Slow deployments → enables fast, automated provisioning The difference between declarative and imperative approaches Imperative approach You define how to achieve a result step by step. Example: install packages, configure files, start services manually in sequence. Declarative approach You define what the final desired state should be, and the tool figures out how to achieve it. Why Terraform is worth learning Terraform is worth learning because: It allows you to manage infrastructure across multiple cloud providers (AWS, Azure, GCP, etc.) It uses a simple declarative language, making it easier to understand and maint