Channel 9 is a discussion forum used to promote conversations among Microsoft’s customers, hosted by Microsoft, featuring video interviews with developers, podcasts, forums and a wiki. More than twenty different podcasts and IPTV shows are available for download and subscription as well.
According to the first video ever posted on the site, the name “Channel 9″ was chosen after the on-board channel #9 on airplanes. When the flight crew turns on Channel 9, passengers can listen to cockpit conversations. The metaphor makes sense in describing a forum between developers and users — and both the site and the name stuck. Microsoft’s application development teams use Channel 9 as a platform for aggregating user feedback and responding to it, publishing production notes and occasionally posting quirky videos like a “Hitchhiker’s Guide to Microsoft.” You can learn more about the story of Channel 9 by watching this video or reading the Channel 9 Doctrine.