You've been designing and building digital products for a while now and you're ready to start up your own design agency. But, how do you get clients? How much should you charge? And what about marketing, billing, contracts? User Experience (UX) is the process of enhancing user satisfaction with a product by improving the usability, accessibility, and pleasure provided in the interaction between the user and the product.User Experience (UX) is the way a user feels after using a product, system or service. User experience design (UXD) is the process of enhancing user satisfaction by improving the usability, accessibility, and pleasure provided in the interaction between the user.