An administrator is using a configuration management tool to define a system's configuration. The defined configuration can be used to provision new systems, rebuild existing systems, or roll back sys

Build automation involves using tools and scripts to define system configurations that can be applied consistently to provision new systems, rebuild environments, or restore baseline states. Configuration management tools such as Ansible, Puppet, and Chef implement build automation by encoding the desired system state in declarative files that drive the entire system build lifecycle. This ensures repeatability and eliminates manual configuration drift across managed systems.

Containerization refers to packaging applications and their runtime dependencies into portable container images using technologies like Docker or Podman, not defining host-level OS or system configurations.

Infrastructure as code refers specifically to provisioning and managing cloud or virtual infrastructure resources such as networks, VMs, and storage through templates like Terraform or CloudFormation, not OS-level configuration management.

Test automation refers to using frameworks and scripts to execute software application tests automatically, which is unrelated to provisioning or managing system configurations.