ThisAJAXWorld Conference session discusses how Java EE 5 technologies can be used to create next-generation Web 2.0 applications. It covers how rich interactive GUIs similar to traditional desktops can be designed with AJAX, enabling features such as mash-ups, tagging, and user participation. It also discusses patterns for using Java API for XML Web Services (JAX-WS) to design AJAX back ends using REST-based web services. In addition, it examines security features such as using Captchas to prevent automated attacks and using security images to prevent phishing scams. It discusses programming model issues such as use conventions, how to leverage JavaScript libraries, designing AJAX-enabled JavaServer FacFaces components, and using a single-page paradigm for a Web application. It also examines the use of the model-view-controller pattern for AJAX and contrasts it with its use in traditional Web applications, discusses strategies for producing and consuming RSS feeds, and covers how to plug in a search engine as well as integrate search engine services such as Google.