AWS to build 420 Tbps subsea cable between Japan and Washington State

Type: Development · Technology: Telecom · Country: United States · Capacity: 420 Tbps · Announced: 2026-09-02

Amazon Web Services (AWS) is developing the Sta’O’Nuk subsea cable, a 420 Tbps trans-Pacific route connecting Japan and Washington State, scheduled to enter service in 2029. This project aims to support AI workloads and expand trans-Pacific network capacity, utilizing 20 fiber pairs. Toptana Technologies, owned by the Quinault Indian Nation, is developing a landing station in Ocean Shores, Washington, designed to accommodate multiple subsea cable systems and connect to terrestrial routes into Seattle and Hillsboro, Oregon. Assured Communications is serving as the project's strategic partner, program manager, and operations service provider. The cable will feature quantum-safe optical encryption and physical protection measures against cuts.

Analysis

Amazon Web Services is developing the Sta’O’Nuk subsea cable, a 420 Tbps trans‑Pacific route connecting Japan and Washington State with service targeted for 2029. The Quinault Indian Nation owns Toptana Technologies, which is constructing a landing station in Ocean Shores, Washington designed to accommodate multiple subsea cable systems. Assured Communications is serving as the project’s strategic partner, program manager and operations service provider. The system will employ 20 fiber pairs, quantum‑safe optical encryption and physical protection against cuts, and is scheduled to enter service in 2029.

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