We have learned many aspects of Ajax interaction throughout this book. In the last chapter, we learned how to connect our sample application to a database with PHP. This chapter will explain how to connect to dynamic server-side data with ASP.NET and ColdFusion. The final sample for this book does not use these technologies, so you can skip ahead if you do not have any interest in these two approaches. We will first learn how to connect to dynamic data using ASP.NET, and then we will cover the same functionality with ColdFusion. This chapter will provide us with powerful information that can be applied to other Ajax web applications in order to connect them to dynamic server-side data.