While undersea cables are low-tech in terms of their installation process, they are the workhorses of global communication, carrying over 99% of traffic between continents. However, there are risks involved, including the potential for cable cuts due to fishing equipment or natural disasters, as well as geopolitical complications. Despite these challenges, the expansion of undersea cables is bringing faster internet speeds, lower prices, and economic benefits to various regions around the world. Efforts are underway to build a more resilient undersea cable network through geographic diversity and redundancy.

https://www.cnet.com/home/internet/features/the-secret-life-of-the-500-cables-that-run-the-internet/