Definition: A user interface, commonly referred to as a “UI,” is the user-facing design of a webpage or application. User-friendly UI is important for ecommerce merchants to provide intuitive navigation — and a pleasant shopping experience — for customers.
By definition, "UI" comprises everything on a webpage.
User input options are the elements of the website that the user actually inputs from his or her end. Whenever a user clicks something on the ecommerce site, it counts as a user input. Examples of such elements are drop-down menus, buttons, drag and drops, etc. Such elements empower users to travel to relevant portions of the ecommerce site in a fluid manner. It's imperative that the user inputs are properly labeled so users can get to the desired section of the site in a timely manner.
Navigation options consist of elements that help users figure out how to get to a certain part of the website. They include:
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