Hotmail - The Mount Everest of E-mail Services
In the landscape of today's megaservices, Hotmail just might be Mount Everest. One of the oldest free Web e-mail services, Hotmail relies on more than 10,000 servers spread around the globe to process billions of e-mail transactions per day. What's interesting is that despite this enormous amount of traffic, Hotmail relies on less than 100 system administrators to manage it all.
This is a really interesting interview with Hotmail Engineer, Phil Smoot, providing you with an interesting insight to the behind-the-scenes work with Hotmail.