Crossing Oceans: Subsea Cables and the Hyperscaler Turn
Ninety-nine percent of intercontinental data crosses the ocean floor, not satellites, and the people laying the newest cables are no longer just telcos, they are the hyperscalers themselves. Google, Meta, Microsoft, and Amazon now fund and sometimes solely own transoceanic systems because their internal traffic justifies private capacity. My read: this vertical integration is the same control logic as dark-fiber IRUs, extended under the sea. When a cloud provider owns the cable, it decides which continents get first-class, low-latency access to its compute, and a nation's ability to host AI workloads becomes partly a function of which private cables choose to land on its shores.
Knowledge check
Why have hyperscalers moved from buying subsea capacity to funding and owning entire cable systems?
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Because their internal, machine-to-machine traffic between regions is now large, predictable, and growing enough to justify private capacity. Owning the cable gives them control over routing, over the timing of new capacity, and first claim on the lowest-latency paths. It lets them lay cables to connect their own data-center regions on their own schedule rather than a consortium's, captures future capacity upgrades for the cost of terminal equipment, and lets them decide which regions receive first-class connectivity, mirroring the control logic of dark-fiber IRUs on land.