Following up on our post yesterday here is an interview Sam did with ASP.NET Technical Evangelist: Steve Marx.
Steve discusses the three components of ASP.NET AJAX and shows us a demo of the software formerly known as ATLAS running on top of PHP on Linux to demonstrate some of the front and backend extraction capabilities.
Video: A Technical Look at ASP.NET AJAX
If you are interested in looking a bit more deeply at ASP.NET AJAX, as well as the PHP support Steve released to Codeplex, here are some links he provided:
ASP.NET AJAX: http://ajax.asp.net/
Direct link to download the Microsoft AJAX Library: http://ajax.asp.net/downloads/library/default.aspx?tabid=47
PHP for Microsoft AJAX Library: http://codeplex.com/phpmsajax
Steve's Blog: http://smarx.com/