From Harry Pierson's DevHawk Blog:
Shortly after joining the Architecture Strategy Team, we worked with MSDN to re-launch the .NET Architecture Center. While we've had good success with that site, we realized after running it for several months that we needed a new approach in order to engage architects of all kinds. While Solution Architects are a key audience of ours that is well served by our MSDN site, there are also enterprise and infrastructure architects that we want to be able to engage with via the website. For these audiences, the MSDN site is not really the optimal channel. So today we've launched a new site - the Architecture Resource Center on microsoft.com. We've also re-launched the MSDN site, now called the MSDN Solution Architecture Center.
This site looks great, and I really like the Think Ahead, Learn More, Solve Now, Share Ideas taxonomy. Good work!