UX design is a still a relatively new field

The goal of user interface design is to make the user's interaction as simple and efficient as possible, in terms of accomplishing user goals.

User interface design can dramatically affect the usability and user experience of an application. If a user interface design is too complex or not adapted to targeted users, the user may not be able to find the information or service they are looking for. In website design, this can affect conversion rates. The layout of a user interface design should also be clearly set out for users so that elements can be found in a logical position by the user.