Saying that all Web systems would benefit from a solid evaluation and design of the user experience is easy; arguing against it is hard if you care about user-centered design at all. But we don’t live in a perfect world, and we don’t have unlimited resources. Thus, we must prioritize and identify the areas that stand to gain the most from UX design and UX designers.
The more complex the system, the more involved will the planning and architecture have to be for it. While investing in a full-blown multi-member UX study for a simple static website seems excessive, multi-faceted websites, interaction-rich Web applications and e-commerce websites stand to benefit a lot from UX design.
Those who work on UX (called UX designers) study and evaluate how users feel about a system, looking at such things as ease of use, perception of the value of the system, utility, efficiency in performing tasks and so forth.
UX designers also look at sub-systems and processes within a system. For example, they might study the checkout process of an e-commerce website to see whether users find the process of buying products from the website easy and pleasant. They could delve deeper by studying components of the sub-system, such as seeing how efficient and pleasant is the experience of users filling out input fields in a Web form.
Compared to many other disciplines, particularly Web-based systems, UX is relatively new. The term “user experience” was coined by Dr. Donald Norman, a cognitive science researcher who was also the first to describe the importance of user-centered design (the notion that design decisions should be based on the needs and wants of users).