Why Tata is Expanding India-Singaporean Subsea Connectivity

Tata Communications has announced new investments in subsea cable infrastructure linking India and Singapore, strengthening capacity along one of the region's fastest-growing connectivity corridors.

The company is acquiring significant fibre capacity and expanding its subsea footprint between Mumbai, Chennai and Singapore, with the aim of supporting growing enterprise bandwidth requirements while improving resilience and performance across its global network.

Genius Wong, Executive Vice President of Core and Next-Gen Connectivity Services and Chief Technology Officer at Tata Communications, says the investments are designed to support both immediate demand and long-term network growth.

"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," she says.

"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."

Strengthening a critical regional route

The announcement includes two separate infrastructure investments.

Tata Communications will integrate a new subsea cable system connecting Mumbai and Singapore while also joining a consortium building another cable between Chennai and Singapore.

The second system is expected to be ready for service during the fourth quarter of 2029.

Together, the investments increase capacity across the India-Singapore route, which is an essential pathway for enterprise, cloud and hyperscale traffic moving between India, Southeast Asia and international markets.

The additional infrastructure is intended to provide greater network diversity alongside lower latency and improved resilience as demand for AI-enabled services continues to rise.

Connecting India's data centre ecosystem

The new subsea capacity will integrate with Tata Communications' terrestrial fibre network across India, providing onward connectivity to more than 100 data centres nationwide.

By linking international cable systems with domestic infrastructure, the company aims to offer enterprises scalable connectivity between India and Singapore while supporting distributed cloud environments.

The expanded capacity will also enhance Tata Communications' IZO connectivity portfolio, including IZO DC Dynamic Connectivity and IZO Multi-cloud connectivity solutions.

These services are designed to provide self-healing, always-on and self-provisioning capabilities across interconnected data centres and cloud platforms, allowing customers to activate network capacity as required.

Building on a growing global network

The latest announcement continues Tata Communications' wider investment strategy around its Tata Global Network.

The company's network now spans more than 500,000km of subsea optical fibre alongside 200,000km of terrestrial fibre, forming one of the world's largest wholly owned subsea communications networks and supporting internet traffic across multiple regions.

The new investments also build on work completed earlier this year, when Tata Communications integrated the TGN IA2 (Tata Global Network – Intra-Asia 2) submarine cable into its network.

That addition improved latency, increased redundancy and expanded network diversity through seamless interconnection with the existing TGN IA system.

By adding further subsea capacity between India and Singapore, Tata Communications is ensuring enterprises have access to higher-performance international connectivity across Asia.