VNC, or Virtual Network Computing, is a technology that allows users to remotely control another computer over a network. It transmits the keyboard and mouse inputs from one device to another, while sending back the graphical display. This enables users to access their desktop or applications from anywhere, making it useful for remote work and technical support. VNC operates on a client-server model, where the VNC server runs on the computer being controlled, and the VNC viewer runs on the device used to access it. It is platform-independent, meaning it can work across different operating systems like Windows, macOS, and Linux.