I-AM Cable Raises the Bar for Regional Bandwidth

The planned I-AM subsea cable aims for 320 Tbps, marking a fiber-heavy shift to power Asia’s AI and cloud boom

20 Feb 2026

Asia’s digital arteries are being rebuilt for a new era of scale. Stretching more than 8,000 kilometers across key markets, the Intra-Asia Marine cable, known as I-AM, signals a decisive shift in how the region prepares for relentless data growth.

Slated for completion in 2029, the system will connect Japan, Singapore, and Malaysia in a high-capacity loop designed for the age of artificial intelligence and hyperscale cloud computing. The project is backed by a consortium led by NTT Data and constructed by Alcatel Submarine Networks, reflecting the urgency operators feel as traffic surges across Asia-Pacific.

Its headline number is striking: a design capacity of roughly 320 terabits per second. That figure represents theoretical peak capability rather than current traffic, but it hints at the scale planners believe will soon be necessary.

The real story lies beneath the surface. Instead of relying solely on squeezing more performance from individual fiber strands, I-AM increases the number of fiber pairs inside the cable. Spreading traffic across a broader optical base improves efficiency and resilience while giving operators more room to grow.

Industry analysts see this as a turning point. Data flows across Asia are expanding so rapidly that incremental upgrades no longer suffice, particularly as AI workloads demand stable, high-capacity links between regional hubs.

The timing is no accident. Streaming platforms, fintech services, e-commerce giants, and AI-driven applications are reshaping economies across the region. Governments want resilient infrastructure, and enterprises need low-latency routes that can support cross-border operations without disruption.

Building such systems is far from simple. Marine deployments require complex permitting, coordination among multiple jurisdictions, and deep capital reserves. Geopolitical scrutiny of cross-border infrastructure adds another layer of challenge.

Yet momentum is clearly on the side of expansion. By lowering the structural cost of moving massive volumes of data, fiber-rich systems like I-AM could reshape wholesale bandwidth markets and intensify competition.

For submarine cable operators, the message is clear. The race is no longer just about speed but about scale, and the cables laid today will shape Asia’s digital trajectory for years to come.