The process of designing a user interface (UI) involves creating the look and feel of a digital product. It focuses on aspects such as layout, colors, typography, and interactive elements to enhance user experiences. Key activities in UI design include wireframing, prototyping, and usability testing. Designers aim to make interfaces intuitive and visually appealing, ensuring users can navigate effortlessly. Collaboration between UI designers and developers is crucial for aligning capabilities with aesthetic vision. Ultimately, effective UI design enhances user satisfaction and engagement, contributing to product success.