What is user interface design?
In the past 30 years, the ways in which we interact with content have changed significantly. No longer do we simply pick up a piece of paper and read from left to right — we click, we surf, we roll over, and we search. As these systems have become more complicated it has become increasingly important to make them seem easy. This is the purpose of user interface design.
User interface design, or user experience design, is the process of designing how a user interacts with a given system, whether that system be a website, an application, or a piece of software. It has a hand in all aspects of interaction — how a user perceives a system, how they learn it, and how they use it. While user interface design is primarily associated with digital products, the philosophy behind the field is much older than websites and software. As soon as humans started building machines that required people to operate, someone had to think about how this operation could be carried out as smoothly as possible.