User Interface
use] User Interface refers to the intersection of the techical aspect of a system and its users. Users could be internal to the business / system (customer service support) or external to the business / system (customers). The design of the user interface typically has a significant impact on the performance of the system. Users of a system also learn how to use the system over time, so good usability can help to create lock-in to the business for the customer. A business' homepage is an example of a user interface, as is any other webpage hosted by the business.