CHAPTER 9 DXP Performance Optimization Performance is the primary driver for end-user satisfaction. User-centric DXP platforms aim to provide optimal performance at all touch points. Performance also directly impacts user traffic, user retention, online revenue, and conversion rate. Page performance is also used by some web search engines for ranking the web page in further improving the site traffic. This chapter discusses various dimensions of DXP performance optimization and various methods that are used to achieve the same. DXP Performance Optimization of Presentation Layer In many scenarios, performance is taken up during the end phases of the project when the team notices performance delays during performance testing. Troubleshooting and fixing performance issues during the end stages of the project is not only costly but also impacts the project timelines. Performance optimization should be done iteratively to identify and address performance issues during early phases of the project. User Experience End-user experience is of paramount importance for a DXP. As web pages become more interactive, the page size and associated performance overhead are also increased. Enhancing the user experience involves optimizing the performance at all user touch points. © Shailesh Kumar Shivakumar, Sourabhh Sethii 2019 235 S. K. Shivakumar and S. Sethii, Building Digital Experience Platforms, https://doi.org/10.1007/978-1-4842-4303-9_9