The origin story of subsea communications "The networks we make today are dramatically better than what we made 10 years ago." "If that drops, you lose your mind," Coughlan said. It might be a minor irritation to get a busy signal or dropped call, but interruptions to computer services are much more disruptive. With the hyperscalers in charge, pushing data instead of voice calls, subsea networks had to become much more reliable. In the US and Europe, terrestrial cables shoulder most of the load, but in Southeast Asia, subsea cables dominate, Rey said. ![]() If one Azure region fails, data centers in another region come online to ensure customers' data and services keep humming. Such cables don't come cheap: A transatlantic cable costs about $250 million to $300 million to install, Mauldin said. Google-owned cables already built include Curie, Dunant, Equiano, Firmina and Grace Hopper, and two transpacific cables are coming, too: Topaz this year and, with AT&T and other partners, TPU in 2025. TeleGeography, which tracks subsea cables closely, projects $10 billion will be spent on new subsea cables from 2023 to 2025 around the world. In other words, despite high costs and exotic technology, subsea cables are coming to resemble the rest of the internet. Where once cables were the exception, linking a few high-priority urban centers, now they're becoming a world-spanning mesh. It's all part of a gradual transformation of subsea communications. Helena west of Africa, the southern tip of Chile, Pacific island nations, the 8,000-person town of Sitka, Alaska. Those remain critical, but newer routes are bringing bandwidth far off the beaten track: the west coast of Greenland, the volcanic island of St. The first subsea cables spanned major communication routes like London to New York. Making the subsea network more resilient.Geopolitical tensions with subsea cables.The origin story of subsea communications.Why subsea cables are reaching everywhere.
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