Infrastructure as code (IaC) primarily focuses on managing and provisioning computing infrastructure through machine-readable scripts rather than through physical hardware configuration or interactive configuration tools. The benefits of IaC include reusability of code, automation, and versioning, which help in maintaining consistency, reducing manual errors, and ensuring traceability. A graphical user interface (GUI) is not a benefit associated with IaC, as IaC relies on scripts and code rather than GUI-based configuration tools.