CUPS, or the Common UNIX Printing System, is a modular printing system for UNIX-like operating systems. It allows a computer to act as a print server, managing print jobs and providing a standardized interface for printers. CUPS supports various printer types and protocols, making it versatile for different environments. Developed by Apple Inc., CUPS uses the Internet Printing Protocol (IPP) to communicate with printers. It provides a web-based interface for users to manage print jobs and configure printers easily. CUPS is widely used in both personal and enterprise settings, ensuring efficient printing solutions across diverse platforms.