UI testing is a process that evaluates the user interface of a software application to ensure it meets design specifications and provides a good user experience. This type of testing focuses on elements like buttons, menus, and layouts, checking for functionality, usability, and visual consistency across different devices and screen sizes. During UI testing, testers interact with the application as end-users would, identifying any issues that could hinder usability. Automated tools can assist in this process, allowing for quicker and more efficient testing. Ultimately, the goal is to ensure that users can navigate the application easily and effectively.