This document discusses different approaches to integrating product design into an agile software development process. It presents 5 options: 1) designing up front before development starts, 2) designing at the beginning of each sprint, 3) designing two sprints ahead of development, 4) having dedicated design sprints that alternate with development sprints, and 5) having designers partner directly with developer teams. The document recommends that the best approach is a hybrid that includes doing some initial design up front, having designers partner with developers, and replacing the product owner role with a product designer role to ensure design quality throughout the process. It emphasizes that good product design is important to transform a product from just a bag of features into a unique experience for users.