A graphical user interface (GUI) primarily facilitates user interactions with software applications through visual elements like icons, buttons, and windows. GUIs enable users to perform tasks using intuitive graphical elements rather than relying solely on text-based commands, improving accessibility for individuals with varying levels of technical expertise. By streamlining navigation and enhancing the user experience, GUIs have become a standard in personal computing and application design, allowing users to interact with digital systems more easily.