Amazon Builds First Subsea Cable Connecting Maryland to Ireland with 320 Terabits Per Second Capacity

Nov 05, 2025
CNBC
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Summary

Amazon launches construction of Fastnet, its first wholly-owned subsea fiber-optic cable stretching from Maryland to Ireland with massive 320 terabits per second capacity capable of streaming 12.5 million HD movies simultaneously, set to go operational by 2028.

Key Points

  • Amazon builds Fastnet, its first wholly-owned subsea fiber-optic cable connecting Maryland's Eastern Shore to County Cork, Ireland, with capacity exceeding 320 terabits per second
  • The cable enables streaming of 12.5 million HD movies simultaneously and strengthens network resilience to meet growing demand for cloud computing and artificial intelligence
  • Fastnet expects to become operational by 2028, joining other tech giants like Google, Meta and Microsoft in investing in subsea cable infrastructure

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