No the presentation framework sure doesn't rely on an ajax framework. It's decoupled from the view actually. If you want to base your view on YUI the good thing is that you can. But if your neighbor want it based on GWT (Which is quite popular, like it or not) he can, and if someone else want plain old HTML he can too. The presentation framework gives you the necessary abstraction ! We won't rely on a technology, it changes too quickly, and that's why the presentation framework is born :) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4130896#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...