[1]https://www.techspot.com/amp/news/91713-facebook-hires-nec-build-subsea-fiber
-optic-cable.html

"Why it matters: Facebook has long been looking for ways to increase the
availability and quality of internet access around the world. Years ago, the
social media giant even developed a massive, solar-powered plane that could
beam high-speed internet to underserved areas. That project was killed off in
2018, but Facebook is pursuing a new idea now: a giant, undersea fiber-optic
cable that will stretch between Europe and the US."

   "The goal of this initiative is to drastically improve data transfer
   speeds between the two regions. The cable will be composed of 24 fiber
   pairs, with the ability to transmit a "[2]half Petabit per second." If
   the cable's construction is successful, that figure will represent the
   fastest data transfer speeds for any long-distance, "repeatered optical
   subsea cable system" of its kind."

References

   1. https://www.techspot.com/amp/news/91713-facebook-hires-nec-build-subsea-fiber-optic-cable.html
   2. https://www.asiaone.com/business/nec-build-transatlantic-cable