Infrastructure as Code (IaC) is a modern IT practice that involves managing and provisioning computing infrastructure through machine-readable configuration files, rather than through manual hardware configuration or interactive configuration tools. This approach allows developers and IT professionals to automate the setup of infrastructure components such as servers, networks, and storage, ensuring consistency and efficiency across environments. IaC tools, like HashiCorp Terraform, Azure Bicep / ARM Templates, Ansible, and AWS CloudFormation, enable version control, collaboration, and scalability, making infrastructure management more predictable and repeatable. By treating infrastructure as code, organizations can streamline deployment processes, reduce errors, and accelerate development and operations (DevOps) workflows.