Puppet is an open source configuration management tool used for automating system administration tasks such as software installation, configuration, and management. It allows system administrators to define the state of the IT infrastructure, and then automatically enforce the desired state.
For example, Puppet can be used to manage the installation of software packages, configure user accounts, and deploy applications. It can also be used to automate system updates, patching, and maintenance. Puppet can also be used to monitor system health and performance, and to generate reports.