Date: September 24, 2026
Author: Catie Owen, Regional Content & Insights Lead
Executive Overview
For decades, the standard playbook of the digital infrastructure sector was remarkably consistent. Whenever telecom operators, utility investors, or consortiums announced plans to lay multi-million-dollar subsea cables across the world’s oceans, the justification was familiar and predictable: general internet growth, the relentless surge of video streaming, and the global expansion of enterprise cloud computing.
Today, that narrative has fundamentally shifted. Artificial intelligence has entrenched itself at the core of the telecommunications lexicon. Across the board, newly launched subsea projects are frequently marketed as custom-built pipelines designed to adapt to the heavy, continuous data workloads expected to define the next decade of computing.
Yet, beneath the polished press releases and high-stakes financial announcements, a pressing question lingers across boardrooms and industry conferences: Is artificial intelligence genuinely driving the historic wave of capital flowing into subsea infrastructure today, or are existing, long-overdue system upgrades simply being repackaged with a trendy AI label to appease investors?
An examination of key industry announcements from September reveals that the truth lies somewhere between the lines. While AI is undeniably altering the velocity of capacity planning and shifting the geographic focus of multi-terabit networks, it is acting primarily as an accelerant to underlying secular trends rather than creating out of whole cloth the need for deep-sea connectivity.
Detailed Chronology of Recent Infrastructure Shifts
The month of September 2026 provided a definitive lens through which to evaluate how major technology players and infrastructure developers are approaching capacity expansion. The convergence of hardware development, edge data center convergence, and regional digital inclusion paints a complex picture of modern subsea engineering.
Mid-September: Hyperscalers Set the Pace
The most compelling evidence of AI-driven capital expenditure comes from the world’s largest cloud providers—commonly known as hyperscalers—who are increasingly abandoning their historical roles as mere bandwidth buyers to become direct owners and architects of global physical infrastructure.
On September 21, Meta made headlines with the announcement of Petal, an ambitious 7,000-kilometer transatlantic cable designed to connect the United States and France by 2029. Crucially, Petal is engineered to be the world’s first petabit-capacity subsea cable, capable of delivering a staggering 1 petabit per second (Pbps). Furthermore, it represents the first large-scale commercial deployment of advanced multi-core fibre technology.
This announcement follows closely on the heels of Meta’s 2025 revelation of Project Waterworth, where corporate leadership explicitly linked surging AI demands to the imperative of building new subsea pipelines. The company noted that without continuous, massive investments in physical redundancy, future artificial intelligence expansion would place unprecedented stress on legacy cables, draining available capacity and eroding network resilience.
Concurrent Industry Milestones
Earlier in the month, Exa Infrastructure unveiled the Exa Meridian project—a 6,552-kilometer system linking New Jersey in the United States directly to the United Kingdom. Delivering up to 500Tbps, the Exa Meridian stands as the first single-operator transatlantic cable built in more than a decade. While Exa operates as a carrier-neutral provider, the business case driving the project relies heavily on forecasted demands from hyperscalers and cloud operators seeking to secure massive, preemptive pools of capacity for exponential AI data flows.
Simultaneously, Australian infrastructure developer SUBCO unveiled plans for three new Indo-Pacific cable systems spanning a combined distance of more than 24,000 kilometers. Speaking on the strategic rationale behind the build, SUBCO founder and co-CEO Bevan Slattery delivered a blunt assessment of the modern connectivity landscape:
"AI factories are dead without massive subsea connectivity to carry tokens from factory to customer."
Supporting Context & Metrics: Convergence, Edge, and Global Development
While multi-terabit deep-sea cables dominate industry headlines, a parallel structural transformation is occurring at the land-sea interface. Subsea cable systems and land-based data center infrastructure are no longer operating as isolated assets; they are rapidly converging.
The Rise of AI-Ready Landing Gateways
In September, Telxius opened a carrier-neutral, AI-ready landing gateway and edge data center in Cancun, Mexico. Serving as the designated landing point for the upcoming Tikal cable system, the facility physically integrates subsea connectivity, terrestrial backhaul, and high-density compute nodes under one roof.
In North America, Digital Realty announced plans to construct a dedicated cable landing station within its LAX12 facility in Los Angeles. Rather than treating cable landing sites as bare-bones utility sheds, the project offers comprehensive landing, power, and interconnection services designed specifically to handle the massive, complex exchange of international traffic flowing between Asia-Pacific and North America.
The Counterweight: Regional Connectivity and Social Impact
Despite the overwhelming dominance of the AI narrative, it would be deeply misleading to frame every submarine cable investment as purely dedicated to machine learning workloads. Many projects continue to be driven by fundamental human development, economic inclusion, and basic connectivity requirements.
For instance, EllaLink’s deployment of two submarine branching units to extend connectivity into Brazil does not stem from the AI race. Instead, the initiative will deliver dedicated connectivity to the Pará and Maranhão regions as part of the Mais Conectado project, supported by the European Union’s Global Gateway strategy.
+--------------------------------------------------------------------------+
| Drivers of Modern Subsea Investment |
+----------------------------+---------------------------------------------+
| Primary Driver | Associated Projects & Regions |
+----------------------------+---------------------------------------------+
| AI Workloads & Hyperscalers| Meta Petal, Exa Meridian, SUBCO Indo-Pacific|
| Edge & Data Center Synergy | Telxius Cancun Gateway, Digital Realty LAX12|
| Regional Digital Inclusion | EllaLink Brazil (Mais Conectado), ACE Cable |
+----------------------------+---------------------------------------------+Bringing an initial combined capacity of 17Tbps to these areas directly addresses the digital divide. Historically reliant on fragile terrestrial routes, these regions score relatively low on the United Nations’ Human Development Index (HDI). Upgrading their network access directly improves public digital services spanning healthcare, education, and e-government.
Similarly, the ongoing upgrade of the Africa Coast to Europe (ACE) consortium cable to exceed 30Tbps highlights the vital humanitarian and macroeconomic goals of subsea infrastructure. Serving upwards of 500 million people across more than 20 nations, the system provides an essential economic backbone for a continent where digital adoption translates directly into tangible improvements in quality of life.
Official Statements and Industry Perspectives
The dual nature of contemporary subsea investment is best captured through the perspectives of industry leaders who navigate the tension between emerging computing demands and foundational human connectivity.
Describing the strategic rationale behind Telxius’s Cancun facility, Chief Marketing Officer Mónica Martínez emphasized the operational efficiencies gained by uniting disparate network layers:
"By bringing connectivity and computing resources closer to where demand is growing, we enable lower latency, greater resilience, and faster access to cloud, content, and AI-driven services for customers across the region."
Meanwhile, addressing the broader socioeconomic impacts of international routes, Philippe Recco, President of the ACE Management Committee, underscored the fundamental mission of submarine cables:
"International routes drive economic growth, digital inclusion, and cloud adoption across Africa."
Even as operators contend with historical vulnerabilities—such as the severe West African cable outages caused by multiple physical faults—the mandate to upgrade capacity remains universal, driven as much by baseline regional demand as by high-performance data processing.
Future Outlook: Is AI an Engine or an Accelerant?
Synthesizing the myriad forces shaping the subsea landscape leads to a nuanced conclusion: artificial intelligence is accelerating global bandwidth demand rather than inventing it from scratch.
Long before large language models and distributed neural networks became corporate budget priorities, the underlying volume of international data traffic was expanding rapidly. Driven by enterprise digitalization, global video streaming, cloud migration, and the baseline human right of digital connectivity, demand curves were already pointing steadily upward.
However, AI has fundamentally changed how and where capital is deployed. It has transformed infrastructure planning from a reactive balancing act into a proactive, highly strategic science. Hyperscalers and developers are no longer merely responding to today’s congested routes; they are engineering dedicated, high-resilience corridors designed to support the immense traffic flows of tomorrow’s compute clusters.
As the industry gathers for milestone events such as the 25th-anniversary edition of Capacity Europe 2026—bringing together more than 3,500 decision-makers from across the digital infrastructure ecosystem—the verdict is clear. AI may not be the sole architect of every subsea cable in the water, but it has officially cemented itself as the new standard for global capacity planning, ensuring that the subsea sector remains the indispensable backbone of the modern digital economy.
