Steve Peterson at Gamesindustry.biz has put up a Photo Tour of the new offices Bungie is developing Destiny in. Of the things I didn't know about the building, this one was the most interesting:

Parsons related how they had to use the second-largest crane in the country to lower the refrigeration units onto the roof; he said they were afraid they'd have to use a helicopter, which would have meant shutting down a wide area of the city, but fortunately that wasn't needed. Refrigeration and air conditioning are important due to the massive server infrastructure required by Bungie's operations; six huge units occupy much of the roof space.

Sounds like Bungie has big infrastructure plans around Destiny, far more than just XBL matchmaking.