What is UX?
UX is the User Experience (literally: «user experience»). In other words, this is what experience/impression the user gets from working with your interface. Whether it manages to achieve the goal and how easy or difficult it is to do it. You can learn more here to understand web design and decide whether you, the business, need it
According to UXnet, the User Experience Network, user experience is “an emerging field concerned with improving the design of anything people experience: a web site, a toy, or a museum. UX is inherently interdisciplinary, synthesizing methods, techniques, and wisdom from many fields, ranging from brand design to ethnography to library science to architecture and more.