Composite Application Framework (CAF) uses asynchronous JavaScript and XML (Ajax) for creating interactive web applications. In the Ajax model, an Ajax engine acts as an intermediary between the user and the server. When the user interacts with a web form, the web page communicates asynchronously with the server, enabling the user to make multiple changes in a web form without the need for a page reload. This independent communication behavior provides a rapid response to the user’s input into the web application.

Many of the controls available on the Palette view of the UI Development perspective use Ajax techniques, making it possible for you to incorporate Ajax into your portlet applications. Controls with Ajax capabilities are identified as such in the Controls Reference.