A Graphical User Interface, or GUI, is a visual way for users to interact with computers and software. Instead of typing commands, users can click on icons, buttons, and menus to perform tasks. This makes it easier for people to use technology, as they can see what options are available and choose what they want to do. GUIs are found in many devices, including smartphones, tablets, and computers. They often use images, colors, and layouts to create an intuitive experience. Popular operating systems like Windows and macOS rely on GUIs to help users navigate their features and applications effortlessly.