Have you ever wondered what a datacenter looks like? Maybe you saw a datacenter 5 years ago. I can tell you first hand a lot has changed in datacenter construction and implementation in the last 5 years.
There are a couple of great videos on YouTube that show off a few of the things that Microsoft is doing with cloud computing hardware and datacenters.
This first video is of what is called an ITPAC (IT pre-assembled components). This can be a datacenter in a box or it can be a subset of a larger datacenter. The video is just over 3 minutes long and shows an animated build-out of a datacenter container and even shows how we do some temperature regulation inside the container itself.
This second video (about 10 minutes long) provides a quick, but in depth view of the global Microsoft Datacenter network that is the backbone of many Microsoft products and services, including Windows Azure.