FAI is a tool for unattended mass deployment of Linux. It's a system to install and configure Linux systems and software packages on computers as well as virtual machines, from small labs to large-scale infrastructures like clusters and virtual environments.

FAI, or Fully Automatic Installation, is an open-source tool for automating the installation and configuration of Linux-based operating systems. FAI enables users to deploy new systems quickly and efficiently, reducing the time and effort required to set up and configure new systems.

FAI works by using a combination of preseed files, configuration scripts, and package lists to automate the installation process. It enables users to define custom profiles for different types of systems, making it easy to deploy a standard set of software and configurations across an entire fleet of systems.

FAI also provides a range of tools for configuring and managing systems after they have been installed, including support for package management, system updates, and configuration management. It supports a wide range of Linux distributions, including Debian, Ubuntu, and CentOS, among others.

One of the key benefits of FAI is its flexibility. It provides a wide range of options for configuring and customizing the installation process, making it easy to tailor the installation to the specific needs of the user or organization. It also provides detailed documentation and support, making it easy for users to get started with the tool.

Overall, FAI is a powerful and flexible tool for automating the installation and configuration of Linux-based operating systems. Its benefits include flexibility, customization options, and ease of use, making it an ideal tool for system administrators and IT professionals looking to streamline the deployment of new systems.