User Interface (UI) refers to the visual layout and interactive elements of a website or app that users engage with—such as buttons, menus, icons, product images, search bars, and navigation tools. In e-commerce, a clean and intuitive UI is essential for guiding customers through their shopping journey. A well-designed UI makes it easier for shoppers to browse, find products, and complete purchases without frustration. When your online store is visually appealing and easy to use, it builds trust, reduces bounce rates, and increases conversions—making UI a key factor in your store’s success.