This document provides a brief history of user experience (UX) and discusses how it has evolved over time. It defines UX as how one feels about using a product, system, or service and notes that it involves factors like demographics, context, motivations, values, feelings and culture. The document also discusses what UX teams are typically comprised of today and lists 8 principles of UX design, including that design doesn't end with documents, to get code implemented as soon as possible, and to say "no" often. It emphasizes that the goal is to design and build awesome products.