A Graphical User Interface (GUI) is the visual component of a computer system that allows users to interact with software through graphical elements such as windows, icons, buttons, and menus. Unlike text-based interfaces that require typed commands, GUIs enable users to perform tasks by clicking, dragging, and selecting items on the screen. This approach makes computers and applications more accessible and user-friendly, reducing the need for specialized technical knowledge and making technology easier to use for everyone.