Scott Taylor works at the New York Times. He's also a major core contributor to WordPress. In this post, he describes how the Blogs division of the New York Times rebuilt their setup to fit into the Times' overall redesign and restructuring.
It's a fascinating read, and gives a great deal of insight into the many challenges they faced. It's also really awesome to see how Scott and the other members of the team were able to make it so many technologies can play well together.