Chris has worked on pretty much every XML core technology from Microsoft starting with MSXML in 1997, then to System.Xml in the .NET Frameworks and is now focusing on building XML tools in Visual Studio. Before working at Microsoft, Chris started his own company, he also worked at the Apple/IBM joint venture called Taligent, and before that he was a consultant at IBM working on OS/2 applications. See http://msdn.microsoft.com/xml.