In this chapter we will explore the new features in Domino. Designer 8.5. There are many exciting changes and additions to Domino Designer 8.5. The first we will cover is the introduction of the Eclipse based integrated development environment. Domino Designer 8.5, which is also known as Domino Designer on Eclipse or DDE, takes advantage of Eclipse technology to deliver a more powerful developer environment. The look and feel is more consistent with Notes client version 8.x, with the features and flexibility one would expect of an Eclipse-based IDE. The new UI will be examined at a high level. The next major feature addition that will be covered is XPages. XPages are a new type of design element being introduced in the 8.5 release that will revolutionize Domino Web Applications. XPages enable application developers to quickly and easily create rich Domino web applications with a Web 2.0 look and feel. Finally we will review improvements to CSS support, enhancements to HTML generation, JavaScript controls, a new method related to ID Vault: ResetUserPassword, and changes to web services.