Meta to Lay First Petabit Subsea Fiberoptic Cable

Meta has unveiled plans for a massive infrastructure project to construct the world's first petabit-capacity submarine fiberoptic cable. Dubbed Petal, the undersea link will stretch 7,000 kilometers (4,350 miles) across the Atlantic Ocean to connect the United States directly to France. To realize this ambitious project, the social media and technology giant is collaborating with hardware manufacturers NEC and Sumitomo Electric Industries for construction, while partnering with French telecommunications provider Orange to manage the physical landing of the cable on the French coastline.

The Petal system represents a massive leap forward in global data transmission, offering more than twice the bandwidth of the fastest transoceanic cables currently in development. For comparison, Amazon Web Services announced plans last November for a 320 terabits per second (Tbit/s) cable connecting the United States and Ireland. Meanwhile, a separate transpacific cable system announced in January to link Australia and the United States is designed to deliver 400 Tbit/s. By breaking the petabit threshold, Meta's new infrastructure will dwarf these existing state-of-the-art projects.

For AI practitioners and cloud engineers, this unprecedented bandwidth is critical for handling the massive, distributed datasets required to train and run modern generative AI models. As model architectures grow and require real-time synchronization across international data centers, ultra-high-capacity pipelines like Petal will reduce latency and prevent data transfer bottlenecks. However, this boom in subsea infrastructure also brings geopolitical challenges. United States lawmakers have expressed growing security concerns regarding undersea cables, citing past security incidents and calling for major service providers to disclose comprehensive details about their underwater networks.