Introduction SharePoint is based on a very rich web interface containing lots of moving parts and lots of customizable areas. As you know the Interwebz is based on a request-response approach where you request a page and get a response back. The approach is the same whether you update the whole page or portions of it. The last decade we’ve seen smart approaches working around this “problem” using DHTML, JavaScript, AJAX, UpdatePanels, you name it.