Description: The Application User Interface (UI) is the space where user interaction with the application occurs. This interface is crucial for user experience, as it determines how users interact with the software, facilitating navigation and the use of available functionalities. A good UI should be intuitive, allowing users to perform tasks efficiently and effectively. The main features of a UI include visual elements such as buttons, menus, icons, and forms, as well as the overall layout and design that guide the user through the application. The relevance of a well-designed user interface lies in its ability to enhance productivity, reduce the learning curve, and increase user satisfaction, which is essential in agile development environments and in the adoption of cloud technologies.