Lengthy-Haul Networks and Bandwidth Development

How a lot long-haul community bandwidth is required to energy the AI revolution?

Whereas knowledge heart investments at the moment command nearly all of capital expenditure, the long-haul subsea and terrestrial networks that join these services are more and more vital. These networks require quite a lot of funding and planning for AI infrastructure, as they sew knowledge facilities collectively and allow customers around the globe to entry AI companies.

The long-term affect of AI on long-haul community bandwidth necessities continues to be evolving and lacks a easy, uniform reply.

Powered by our Transport Networks Analysis Service, this evaluation discusses the place we see the affect of AI on worldwide bandwidth demand, what the networks most impacted by AI can inform us about AI-specific demand, and future capability progress in main cloud areas that would bolster AI utilization.

Sizing up the AI affect on worldwide bandwidth

All worldwide networks will find yourself carrying a point of AI-related site visitors. Used worldwide bandwidth is the first metric we use to evaluate the amount of worldwide demand. Globally, our forecasts present that used worldwide bandwidth is predicted to develop at a compounded annual price of 24% between 2025 and 2035. This price of progress implies a doubling virtually each 3 years.

Used Worldwide Bandwidth Development by Area

Whereas it’s not doable to disaggregate AI-specific demand, our content material supplier bandwidth class contains the networks of main hyperscalers, cloud suppliers, in addition to AI platform firms and neoclouds. These are the networks most closely impacted by AI.

The businesses on this class are the dominant customers of worldwide bandwidth and accounted for 75% of all used capability globally in 2025. Worldwide content material supplier bandwidth is predicted to extend 9-fold from 2025 to 2035.

Used Worldwide Bandwidth by Supply

Mapping future capability progress

Main cloud service suppliers (Amazon, Microsoft, Google) together with Meta (which lacks a cloud enterprise) have international networks that carry a large mixture of site visitors varieties, together with AI-based demand. Since AI inference is essentially cloud-based, wanting broadly at main cloud area areas is a helpful technique to see which areas in every area are key nodes for future capability progress. The map beneath reveals the give attention to cloud areas within the U.S., Europe, and Asia. The funding from these firms in new terrestrial fiber and submarine cable techniques is closely influenced by the necessity to interconnect these websites.

Choose Proprietary and Cloud Area Knowledge Heart Areas, 2026

Notes: Map depicts main proprietary knowledge heart and cloud area areas. Corporations depicted listed here are additionally current in lots of different shared areas. Campus expansions in current areas should not depicted with the “Deliberate” icon.

Two of the main AI platform firms depend on the main hyperscalers’ networks for international attain and big compute, they are not content material simply being customary cloud tenants. Each OpenAI and Anthropic are actively constructing out their very own personal networks to interconnect vital knowledge facilities, that means they’re more and more appearing like community operators in their very own proper.

As a result of AI’s urge for food for energy is seemingly infinite, main hyperscalers aren’t simply letting workloads sit idle. Operators like Google are actively routing computing workloads dynamically throughout totally different knowledge facilities worldwide to optimize for energy and compute availability. Partaking on this method requires a strong, high-capacity mesh community appearing as a world load balancer.

It is not all AI

AI has the potential to reshape international community topologies by forcing networks to observe the hunt for vitality and compute effectivity. However let’s watch out to not attribute growing worldwide bandwidth demand necessities merely to AI. Bandwidth demand for cloud companies, video, social media, and the long-tail of purposes that aren’t immediately tied to AI is huge and nonetheless rising. World community enlargement will even proceed to be wanted alongside conventional corridors.

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Our Transport Networks Analysis Service delivers knowledge and evaluation on long-haul networks and the undersea cable market, with forecasts of worldwide bandwidth provide, demand, costs, and revenues. Study extra and get analysis samples delivered to your e mail.