Tata Communications expands subsea connectivity between India and Singapore

Tata Communications is adding subsea cable capacity between India and Singapore as demand grows for lower-latency connections between enterprise, cloud and data centre networks.

The investment will strengthen the company’s Tata Global Network through two routes. Tata Communications is integrating a new subsea cable system between Mumbai and Singapore, and is also joining a consortium-backed system connecting Chennai and Singapore. The Chennai-Singapore system is expected to be ready for service in Q4 2029.

The company framed the India-Singapore route as an increasingly important corridor for enterprise, cloud and hyperscaler traffic linking India, Southeast Asia and global markets. The added capacity is intended to support AI, cloud computing and data-intensive enterprise applications across Asia and beyond.

Two routes strengthen the India-Singapore corridor

The Mumbai-Singapore integration gives Tata Communications an additional subsea link between India and Singapore, while the Chennai-Singapore system adds a longer-term route that is still several years from service.

Together, the cable systems are intended to improve network diversity, reliability and performance across Tata Communications’ connectivity portfolio. The company said the route will support high-capacity, low-latency traffic between India and Singapore, two markets it described as emerging AI and cloud hubs.

Genius Wong, Executive Vice President, Core and Next-Gen Connectivity Services, and Chief Technology Officer at Tata Communications, also shared that the investments combine short-term capacity enhancement with longer-term network planning.

“As global demand for digital and AI-driven services continues to accelerate, these investments reinforce our commitment to building future-ready digital infrastructure at scale,” Wong said. “By combining subsea capacity enhancement with both short term and long-term strategic investments, we are strengthening the reliability, scalability and performance of connectivity solutions for our customers across one of the world’s busiest digital corridors. These enhancements align with Tata Communications’ long-term strategy to expand its global subsea network footprint, provide business outcome solutions to customers and reinforce India’s position as a Digital Hub.”

Terrestrial fibre links extend access to Indian data centres

The new subsea systems will connect into Tata Communications’ terrestrial fibre network in India, extending onward connectivity to more than 100 data centres across the country.

The company said this combination of subsea and terrestrial infrastructure will support its IZO connectivity services, including IZO DC Dynamic Connectivity and IZO Multi-cloud connectivity. These services are designed to help customers activate and integrate network capacity into their own environments on demand.

Tata Communications also said the expanded network will support self-healing, always-on and self-provisioning capabilities across data centre and cloud ecosystems. Those capabilities are aimed at enterprises that need to connect workloads across data centres and cloud platforms without relying on manual provisioning for every change.

Investment builds on TGN IA2 integration

The latest investment follows Tata Communications’ 2025 integration of TGN IA2, or Tata Global Network Intra-Asia 2, a submarine cable that the company said improved latency, redundancy and network diversity through interconnection with TGN IA.

Tata Communications Network Fabric spans more than 500,000 km of subsea optical fibre and 200,000 km of terrestrial fibre. The company describes this network as the backbone of its connectivity portfolio, supporting enterprise and cloud traffic across its global infrastructure.

With the Chennai-Singapore system expected to be ready for service only in Q4 2029, the impact of the new route will depend on delivery timelines and how the added capacity is integrated into Tata Communications’ broader network.