"Best Answer ConservativeChitChat answered 2 years ago Several datacenters around the world, most the size of a football pitch, each housing thousands of racks of "blade servers": http://en.wikipedia.org/wiki/Blade_serve... All of them usually equipped with back-up electricity supply in the form of several diesel generators that could power a small city. These are then connected to posh routers, such as the "Juniper M Series" & "Cisco GSR 12000". http://en.wikipedia.org/wiki/Juniper_M_S... http://en.wikipedia.org/wiki/Cisco_12000 These routers are then connected to the other data centres, usually in the form of Fibre-optic cables, and eventually to your local telephone exchange. http://en.wikipedia.org/wiki/Fiber-optic... These are then connected to others around the world via a mix of either communications satelites, and undersea phone cables such as these: http://en.wikipedia.org/wiki/Transatlant..." #internet #trivia #knowledge #infrastructure #pub