If you've ever set up a server by clicking through a cloud console, you already know the problem Infrastructure as Code solves. You click for an hour, it works, and three months later nobody remembers exactly what you did. Infrastructure as Code fixes that. Here's what it means, in plain terms.
What Infrastructure as Code actually is
Infrastructure as Code (IaC) is the practice of managing your infrastructure, servers, networks, databases, load balancers, through code and config files instead of clicking around by hand.
Instead of opening the AWS console and creating a server manually, you write a file that describes the server you want. A tool reads that file and creates it for you. The file becomes the single source of truth, and you can save it, share it, and rerun it any time.
That's the whole idea. Your infrastructure stops being a thing you build by memory and becomes a thing you write down.
