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  1. Odd Lots
  2. Samanth Subramanian on the Undersea Cables That Keep the Internet Alive
Samanth Subramanian on the Undersea Cables That Keep the Internet Alive

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive

Odd Lots · May 13, 2026

The internet isn't a cloud; it's a fragile, physical network of undersea cables increasingly owned by Big Tech and facing geopolitical risks.

The Global Internet Has Physical Chokepoints Like the Suez Canal, Creating Major Vulnerabilities

Just like global shipping, the internet's physical infrastructure is concentrated in geographic chokepoints. The Red Sea and the Strait of Hormuz are critical corridors for data traffic between Asia and Europe, making them highly vulnerable to disruption by malicious actors.

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive thumbnail

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive

Odd Lots·a day ago

US-China Tensions Are Creating Two Parallel Internets, Threatening a Global Fracture

Geopolitical friction is preventing US and Chinese firms from collaborating on new cable projects, leading to the development of redundant, competing systems. This trend risks bifurcating the internet, creating separate spheres of influence and undermining the original vision of a single, open global network.

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive thumbnail

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive

Odd Lots·a day ago

The AI Boom Is Driving a New Undersea Cable Construction Cycle to Handle Massive Data Demands

Previous fears of a glut in undersea cable capacity have been erased by the rise of AI. The massive data flows required for training and operating AI models are accelerating the need for new, higher-capacity cables, driving the next major investment cycle in the industry.

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive thumbnail

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive

Odd Lots·a day ago

Modern Undersea Fiber Optic Cables Are Repaired Using 19th-Century Grapnel Hook Technology

Despite the advanced technology of fiber optics, the physical repair process for a severed undersea cable remains surprisingly old-fashioned. Ships are sent to the fault location, where they drag a grapnel hook along the seafloor to snag the cable, a method largely unchanged from the telegraph era.

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive thumbnail

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive

Odd Lots·a day ago

Big Tech's Cable Ownership Forces Developing Nations to Trade Data Sovereignty for Internet Access

As tech giants like Meta fund critical internet infrastructure, they gain immense leverage over developing nations. These countries face a dilemma: accept the cable and potentially cede control over citizen data, or refuse and risk being left behind in the global digital economy.

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive thumbnail

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive

Odd Lots·a day ago

The Internet's Resilience Comes From Tech Rivals Buying Redundancy on Each Other's Cables

With roughly 100 undersea cables cut accidentally each year, the internet remains stable due to immense redundancy. This is achieved through a form of 'coopetition,' where rivals like Google and Meta will purchase backup capacity on each other's proprietary cables to ensure their own services never go down.

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive thumbnail

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive

Odd Lots·a day ago

Modern Internet Cables Land in the Same Spots as 19th-Century Telegraph Lines, Creating Concentrated Risk

Due to inertia and the high cost of building new landing infrastructure, today's fiber optic cables often terminate in the exact same coastal cities as telegraph cables did over a century ago. This historical path dependency creates concentrated points of failure instead of a more distributed, resilient network.

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive thumbnail

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive

Odd Lots·a day ago

Big Tech Now Owns the Internet's Backbone, Funding Two-Thirds of New Undersea Cables

The funding model for undersea cables has shifted from state-owned telecom consortiums to private investment, and now to big tech. Giants like Google, Meta, Amazon, and Microsoft now fund and own two-thirds of all new cables, giving them unprecedented control over the internet's physical infrastructure.

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive thumbnail

Samanth Subramanian on the Undersea Cables That Keep the Internet Alive

Odd Lots·a day ago