What Is Terraform and Why Infrastructure as Code Beats Clicking Consoles

Infrastructure as Code (IaC) is a practice where cloud resources are defined in text files and built automatically by a tool, rather than configured manually through a cloud console. Terraform is the most widely adopted IaC tool, compatible with all major cloud providers including AWS, Azure, and Google Cloud. Unlike manual console clicks, which leave no record and cannot be easily repeated, Terraform configurations are stored in version control systems like Git, enabling change history, code reviews, and environment replication. The core Terraform workflow involves writing resource definitions, running a plan to preview changes, and applying them to make real infrastructure match the described state. Key concepts include providers, resources, variables, and outputs, which together form a small but powerful vocabulary for managing cloud infrastructure consistently at scale.