This is an interesting “tour” of a data center belonging to Equinix. The article and tour make it sound like all Internet companies use Equinix for their data storage, etc., but I don't believe that is true. What is probably true is that this is one of the data center co-location providers that many of them use.
The tour spends most of it's time focusing on power, and touches a tiny bit on cooling and security. It doesn't mention networking at all, etc.
Still, it's interesting if you aren't familiar with facilities like this, and entertaining if you are.