Facebook and Microsoft partner to lay highest capacity transatlantic internet cable yet, connecting Virginia and Spain with a bandwidth of 160Tbps
Facebook and Microsoft are laying a massive Internet cable across the middle of the Atlantic. — Dubbed MAREA—Spanish for “tide” …
Context & Ripple Effects
MAREA is the moment the big cloud platforms stopped renting the ocean floor and started owning it: rather than buying transit from telecom carriers, Facebook and Microsoft are funding their own transatlantic artery between Virginia and Spain, with Telefónica's Telxius unit as operating partner. The route deliberately bypasses the congested northern Atlantic corridor, landing south of the traditional UK–US path.
The move kicked off a string of copycat builds — Google joined Facebook months later on a 120Tbps Los Angeles–Hong Kong cable, and Facebook's consortium ambitions have since stretched to 2Africa reaching the Middle East and India. Meanwhile Facebook and Nokia showed existing cables can be squeezed harder, doubling per-fiber throughput from 13Tbps to 32Tbps before MAREA even lit up.
First-order effects
- Microsoft and Facebook get dedicated 160Tbps capacity between their Virginia data-center cluster and southern Europe, insulating cloud and social traffic from carrier congestion and cable cuts on the crowded northern routes.
- Telxius gains a marquee asset it can operate and sell wholesale capacity on, anchoring its position in the subsea market.
Second-order effects
- Google's answer came fast: partnering with Facebook and Pacific Light Cable Network on its own transpacific build, confirming that hyperscalers now treat cable projects as competitive infrastructure rather than shared utilities.
- Traditional telecom carriers lose pricing leverage on premium transatlantic routes as their largest customers become their builders' competitors.
Third-order effects
- If the pattern holds, the internet's physical layer consolidates around a handful of platform-funded consortia, with carriers reduced to operators and wholesalers of capacity they no longer own end-to-end.
- Cable design starts optimizing for data-center geography — Virginia, Spain, Hong Kong landings — rather than legacy telephony hubs, reshaping which regions capture latency-sensitive workloads.
The trend: Hyperscalers are vertically integrating down into subsea infrastructure, converting the internet's backbone from a telecom product into a private extension of their cloud networks.