Microsoft and Facebook just laid a 160-terabits-per-second cable 4,100 miles across the Atlantic

Microsoft, Facebook, and the telecoms infrastructure company Telxius have announced the completion of the highest capacity subsea cable to ever cross the Atlantic Ocean. The cable is capable of transmitting 160 terabits of data per second, the equivalent of streaming 71 million HD videos at the same time, and 16 million times faster than an average home internet connection, Microsoft claims. The cable will be operational by early 2018.

https://www.theverge.com/2017/9/25/16359966/microsoft-facebook-transatlantic-cable-160-terabits-a-second