This document discusses UX design. It defines UX design as accounting for the end-to-end experience of a product from a user's perspective. UX design is multidisciplinary, involving research, interaction design, visual design, writing and more. The key aspects of UX design methodology are to observe users, think about how to improve their experience, make changes to the product, and iterate the design. An example is given of how Disneyland has improved the park experience over time through UX design.