Amazon's New Cable Highlights Both the Ambition and the Vulnerability of Ireland's AI Infrastructure

Amazon's new transatlantic fiber-optic cable has become a symbol of Ireland's tech ambitions. It has also exposed the risks created by the country's chronically low defense spending, Bloomberg reports.

Why Ireland matters for AI infrastructure

For decades, Ireland has attracted data centers from the biggest tech companies, including Amazon, Google, Meta and Microsoft, thanks to its low corporate tax, EU membership and English-speaking environment. As AI has grown, demand for compute in the country has jumped. By various estimates, data centers already consume about a fifth of all of Ireland's electricity, and the country's grid operator, EirGrid, has repeatedly warned of limits on connecting new facilities in the Dublin area.

• Amazon has laid the new cable across the Atlantic
• Ireland is one of Europe's key hubs for big tech data centers
• Data centers already consume a noticeable share of the country's electricity, by estimates about a fifth
• Ireland's defense spending is chronically lower than that of its EU neighbors

What is the security risk?

Subsea cables carry the overwhelming majority of the world's internet and cloud traffic, including data for training and running AI systems, and they are extremely vulnerable physically. In recent years, incidents of damage to subsea cables in the Baltic Sea have become more frequent, and investigators have linked them to vessels of the so-called shadow fleet. Ireland, meanwhile, has no full-fledged navy or air force to protect its own waters and airspace. The country has historically held to neutrality and spends one of the lowest shares of GDP on defense in Western Europe, while neighboring states have effectively patrolled part of its airspace for years.

How this relates to AI, not just the internet

Transatlantic cables like Amazon's new route are not just a «pipe» for web traffic. They carry data synchronization between data centers, the training and serving of models for customers on both sides of the Atlantic, and traffic from cloud AI services that depend critically on low latency. The more AI compute is concentrated in Ireland, the costlier any connectivity failure becomes, and the more visible the gap grows between the country's digital ambitions and its ability to physically defend them.

What does Amazon have to do with it?

Amazon is not a bystander in this situation. It is one of the main builders of Ireland's digital infrastructure: its cloud division, AWS, has for many years run one of Europe's largest data center clusters in the Dublin region, serving customers with AI workloads among others. The new cable directly increases bandwidth for traffic between those facilities and the US, which feeds Ireland's growing dependence on the company as an anchor tech investor.

What this means

The more global AI infrastructure depends on a few key hubs like Ireland, the sharper the question becomes of how to physically protect the cables and data centers that keep it running.