Amazon Web Services to Build Transatlantic Cable Between Ireland and Maryland

Nov. 5, 2025 — Amazon Web Services announced plans for Fastnet, a new transatlantic subsea cable linking Maryland and County Cork, Ireland, aimed at strengthening data connectivity for cloud computing and artificial intelligence.

Set to enter service in 2028, the system will establish a high-capacity route across the Atlantic, adding new landing points to keep data flowing even if other cables are disrupted. AWS said the project will expand the capacity and resilience of its global fiber backbone as AI-driven data traffic surges worldwide.

Fastnet is AWS’s first wholly owned transatlantic system, joining other subsea networks where the company holds capacity in the Pacific and Asia-Pacific regions, including the JUPITER cable between California and Japan. (The acronym stands for Japan–U.S.–Philippines IT Express Route.)