Inside Google's brain: Search giant reveals how massive network that delivers every search request, YouTube video view and Gmail works

The firm has revealed how the intricate maze of computers that process Internet search requests, show YouTube video clips and distribute email for millions of people works. The search giant revealed it now runs over 100,000 main servers worldwide (pictured, its Iowa server farm), and that they communicated at a blisteringly fast 10Gb/s. Google also admitted that to get the network performance it needed, it has been building its own hardware.