Despite decades of growth, demand for more and faster internet connections continues to skyrocket. According to Cisco, total internet traffic for 2016 will exceed a zettabyte. (A one with 21 zeroes behind it.) That’s enough capacity to stream approximately 143 billion hours of Netflix video at Ultra HD quality.
Though demand is concentrated in the most developed countries, much of the world’s internet growth is driven by globe-spanning enterprises. Companies such as Facebook, Google, and especially, Netflix are pushing the limits of how much content can be shuttled around the world each day. Though satellite connections also exist, the vast majority of intercontinental traffic crosses a relatively small number of undersea cables—the arteries of the global internet.
See the map and read more here: qz.com/657898/this-map-shows-the-explosive-growth-of-underwater-cables-the-power-the-global-internet/