Yast is a powerful system administration tool used primarily in the openSUSE and SUSE Linux Enterprise distributions. It provides a user-friendly interface for managing various aspects of the operating system, including software installation, system configuration, and network settings. With Yast, users can easily install and update software packages, configure hardware, and manage system services. Its modular design allows for a wide range of functionalities, making it suitable for both novice and experienced users who want to streamline their Linux experience.