Startup EON plans laser-armed satellites to replace undersea fiber cables for data centers

Global data centers are drowning in intercontinental data flow, yet they rely on a fragile network of undersea fiberoptic cables that are expensive and arduous to maintain. Endeavor Optical Networks, a startup launched in May and now emerging with $10.75 million in seed capital from General Catalyst and Andreessen Horowitz, is proposing an orbital solution: a constellation of laser-equipped satellites that can beam data across the planet at fiber-speed throughput.

The Problem with Current Infrastructure#

Undersea cables crisscross the ocean floor to shuttle data between continents, but they present significant operational headaches. The cables are difficult to locate, access, and repair, and installation remains a complex, time-consuming undertaking. Wireless alternatives have long been dismissed as inadequate—radio transmissions simply cannot match the bandwidth capacity of buried fiber. Until now, space-based options weren't viable either. Traditional satellite internet networks lack the throughput to handle the speeds undersea cables deliver: 200 terabits per second and beyond.

The Technical Leap#

Recent advances in optical technology and more capable satellites are changing the equation. NASA successfully deployed laser-based communications on its latest lunar missions, and several companies—York, Kepler, and Cailabs among them—have demonstrated ground-to-orbit laser links. Those early demonstrations achieved throughput around 2.5 gigabits per second. EON's ambition is substantially higher: the startup targets 2.4 terabits per second starting performance.

The major obstacle is atmospheric distortion. Laser signals degrade as they pass through Earth's atmosphere, and clouds can block transmissions entirely. EON plans to tackle this challenge with proprietary technology and careful network engineering.

EON's Blueprint#

The company envisions a modest constellation of roughly 20 satellites, each capable of establishing a dedicated link between two continents. Early customers would receive 24-hour coverage across their routes. Rather than building a one-size-fits-all service, EON will strategically place ground stations near data centers and content delivery networks, employing weather forecasting and redundant sites to guarantee reliability.

CEO Charlie Horowitz and CTO Tyler Presser are targeting hyperscalers and AI labs as initial customers—organizations that move more data than anyone else and often face expensive or underserved routes. France to Australia or Africa to South America connections offer compelling use cases where dedicated satellite capacity could deliver meaningful value.