The CDnow Data Center, Circa 2000
It was quite a beauty for its day. CDnow started off as a Telnet store, back in the days when people did not even consider the danger of sending your credit card details without encryption. When the CDnow web site was developed, there were not many mature web servers available, so the founders wrote their own in C, called "mserver" (or, Matt's server, after Matt Olim, co-founder). On top of C, Matt started a language called SDK (Site Development Kit), a scripting language tied to Oracle which did many things far ahead of its time.