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AWS builds trans-Pacific cable linking Washington state and Japan

AWS builds trans-Pacific cable linking Washington state and Japan

Built World

Sta'O'Nuk adds 420 Tbps across 20 fiber pairs, with service targeted for 2029

Yesterday: AWS unveils Sta'O'Nuk cable

Overview

Updated 1 hour ago

AWS broke ground on Sta'O'Nuk, a subsea cable connecting Washington state to Japan, with service targeted for 2029. At 420 Tbps across 20 fiber pairs, it will be one of the largest trans-Pacific routes ever built.

The bigger shift is geography. Sta'O'Nuk is the first international cable to land in Washington state in about 30 years. Roughly 30 existing US-Japan cables cluster in California, Oregon, and two Japanese peninsulas, sharing the same exposure to earthquakes, dropped anchors, and fishing damage.

The Washington landing, built with tribal-owned Toptana Technologies, gives AWS an independent Pacific path that can keep traffic moving when the crowded southern corridors go down. That resilience, not just raw capacity, is the point.

Why it matters

Sta'O'Nuk gives US-Japan traffic an independent Pacific path, so one earthquake or anchor drag no longer threatens the region's core internet routes.

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Key Indicators

420 Tbps
Planned capacity
Total bandwidth across 20 fiber pairs once the cable is live.
20
Fiber pairs
Each pair uses the latest generation of subsea transmission optics.
30
Years since last Washington state international cable landing
The cable breaks a roughly three-decade gap for the state.
≈30
Existing US-Japan cables in concentrated corridors
Most land in California, Oregon, and two Japanese peninsulas, per AWS.
$70.5B
Projected Washington GDP impact, 2029-2044
AWS estimate covering construction and indirect jobs over the cable's lifetime.

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People Involved

Organizations Involved

Timeline

2022 2029

4 events Latest: Yesterday
Tap a bar to jump to that date
  1. Target operational date

    Upcoming Milestone

    Sta'O'Nuk scheduled to enter service, adding capacity to the AWS Global Network.

  2. AWS unveils Sta'O'Nuk cable

    Latest Announcement

    AWS announced the Washington-to-Japan cable with 420 Tbps capacity and a 2029 service target.

  3. Toptana breaks ground on Ocean Shores landing station

    Construction

    Facility designed for up to four subsea systems; first new Washington landing station in 25 years.

  4. Quinault Indian Nation founds Toptana Technologies

    Origins

    Tribal-owned company created to build cable landing infrastructure on the Washington coast.

Historical Context

3 moments from history that rhyme with this story — and how they unfolded.

1858-1866

First transatlantic telegraph cable (1858/1866)

The first transatlantic telegraph cable, completed in August 1858, transmitted briefly then failed within weeks due to insulation and voltage problems. A durable connection followed in 1866 with Cyrus Field's second cable.

Then

The 1858 failure set back the project financially; the 1866 success proved transoceanic telegraphy viable.

Now

Transatlantic cables became the backbone of global communication for over a century, establishing the pattern of private companies funding continental infrastructure.

Why this matters now

Every era's defining connectivity bet starts with a giant, risky cable investment. Sta'O'Nuk is the modern version.

December 2006

Hengchun earthquake cuts Asian cables (2006)

A magnitude 6.7 earthquake off southern Taiwan on December 26, 2006 severed eight submarine cables in the Luzon Strait, including segments used by Asia's biggest carriers.

Then

Internet access across China, Taiwan, Hong Kong, Japan, South Korea, and Southeast Asia degraded for weeks while ships repaired the cables at sea.

Now

The outage pushed carriers to diversify routes, but landing-point concentration persisted, exactly the pattern Sta'O'Nuk challenges.

Why this matters now

Shows what happens when cables share geography: one event knocks out multiple systems at once.

January 2022

Tonga cut off by volcanic eruption (2022)

The Hunga Tonga-Hunga Ha'apai eruption severed the single submarine cable connecting Tonga to the global internet, cutting the nation off for weeks.

Then

Tonga lost nearly all international connectivity; satellite links returned limited service while the cable was repaired at sea more than a month later.

Now

Tonga pushed for a second cable and an alternate landing to avoid repeat outages, echoing why AWS wants geographic diversity.

Why this matters now

A single-cable, single-landing dependency left an entire country offline, the failure mode AWS is designing against.

Sources

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