YaST (Yet another Setup Tool) is a powerful configuration tool used in the openSUSE and SUSE Linux Enterprise distributions. It provides a user-friendly interface for managing system settings, software installation, and hardware configuration, making it easier for users to customize their Linux experience. With YaST, users can perform tasks such as setting up network connections, managing user accounts, and configuring system services. Its modular design allows for easy access to various system management functions, streamlining the process of maintaining and optimizing a Linux system.