India’s New I-2SEA Subsea Cable: Why the Project Matters for Internet Security and Digital Growth

India is preparing to strengthen its international digital connectivity with the arrival of the I-2SEA subsea cable, a major infrastructure project designed to connect India with key technology hubs in Southeast Asia. Backed by major companies including Microsoft, Singtel, Tata Communications and Japan’s NEC, the cable is expected to support the growing demand for high-speed connectivity driven by cloud computing, artificial intelligence and other digital services.

The development is important because India's digital economy increasingly depends on infrastructure that most internet users never see. Beneath the oceans, fibre-optic cables carry enormous volumes of international data, connecting businesses, financial institutions, cloud platforms, governments and consumers across borders.

However, the new cable also highlights a larger issue. Adding another route can improve connectivity, but it does not automatically eliminate the structural weaknesses in India's broader subsea cable network.

What Is the I-2SEA Subsea Cable?

The I-2SEA project is designed to create a new high-speed digital connection between India and Southeast Asia. According to the NDTV report, the system will connect Singapore and Malaysia with India and has been designed with more than one landing point on India's east coast.

The project has attracted significant technology and telecommunications players. Microsoft, Singapore's Singtel, Tata Communications and NEC are among the companies backing the initiative.

The involvement of large technology companies is significant. Modern cloud platforms and artificial intelligence systems require enormous amounts of data to move quickly between data centres, users and computing infrastructure.

As India's AI and cloud ecosystem expands, reliable international connectivity becomes increasingly important.

Why Subsea Cables Matter

The internet may appear to operate through satellites, mobile towers and wireless networks, but international connectivity relies heavily on physical infrastructure.

Submarine fibre-optic cables run across the seabed and connect countries and continents. They are capable of carrying vastly more data than satellite systems, making them indispensable to the global digital economy.

For India, these cables support everything from international video calls and cloud applications to financial transactions, corporate networks and data exchanges.

This means that cable infrastructure is not simply a telecommunications concern. It is increasingly an economic and strategic issue.

Why India Needs More Diverse Cable Routes

India's growing digital economy makes redundancy particularly important.

The NDTV report points to a major concentration problem in India's existing cable network. A large number of cables landing in the country are concentrated around a relatively small section of Mumbai's coastline.

That concentration creates a potential single-point-of-failure problem.

If several cables in the same area were damaged simultaneously, the consequences could extend far beyond a temporary inconvenience for internet users. Telecom operators, financial institutions, businesses and government services could all face connectivity challenges.

The causes of cable damage do not necessarily have to involve deliberate attacks. Anchors from ships, fishing activity, construction and other underwater activity can damage subsea infrastructure.

Geographic Diversity Is a Form of Protection

One of the most important advantages of I-2SEA is that it introduces additional geographical diversity.

Having cable infrastructure on India's eastern coast provides another pathway for international traffic. Multiple landing locations can also reduce the risk that damage at one site will completely isolate a network.

This principle is familiar in other infrastructure sectors. Electricity grids, roads and communication networks generally become more resilient when they have alternative routes.

The same logic applies to the internet.

The Repair Problem India Cannot Ignore

Building cables is only one part of the challenge. Maintaining them is equally important.

When a submarine cable is damaged, specialised vessels are required to locate the fault, reach the affected section and carry out repairs. These ships require specialised equipment and trained crews.

According to the NDTV opinion article, India currently does not have an Indian-owned or India-based cable repair ship operating in its waters. Repairs therefore depend on foreign vessels, which can mean significant waiting periods.

The situation becomes more complicated during periods of geopolitical tension.

A repair vessel may be physically available but still face logistical, regulatory or access-related difficulties. That makes repair capacity an important component of national digital resilience.

Why Faster Repairs Matter

A cable failure does not necessarily mean that India's entire internet will disappear. Data can often be redirected through alternative systems.

But rerouting has limits.

If multiple routes are already busy, additional traffic can put pressure on the remaining network. Businesses could experience slower connections, while services that depend on international data movement could face disruptions.

For companies operating large cloud platforms or global technology operations, even short interruptions can become expensive.

That is why resilience involves more than simply counting how many cables India has. It also depends on where they land, how independent their routes are and how quickly damaged infrastructure can be restored.

I-2SEA and India's AI Ambitions

The timing of I-2SEA is particularly relevant because India is expanding its ambitions in artificial intelligence and cloud computing.

AI applications depend on large-scale computing infrastructure. Data needs to move between users, servers and data centres, while companies increasingly operate services across multiple geographic locations.

A stronger connection with Singapore and Malaysia could therefore support India's expanding role in the regional digital economy.

The project also demonstrates that international technology companies see value in investing in India's digital infrastructure.

That could encourage further investment in data centres, cloud services and AI-related infrastructure.

Connectivity Could Support Businesses Beyond Big Tech

The benefits of stronger international connectivity are not limited to Microsoft or other major technology companies.

Indian startups, IT services companies, banks, multinational corporations and digital platforms also depend on reliable international networks.

A more resilient network could help companies manage international operations and access cloud-based services more efficiently.

For consumers, the effects may be less visible but still meaningful. Many everyday services rely on international infrastructure even when users do not realise it.

Why One New Cable Is Not Enough

The arrival of I-2SEA should be viewed as an important addition rather than a complete solution.

The fundamental challenge is that India's digital connectivity system needs resilience across the entire ecosystem.

That includes more geographically distributed landing stations, stronger physical security, better emergency response systems and domestic repair capabilities.

The NDTV article identifies four broad areas of vulnerability: concentration around landing stations, dependence on overseas supply chains, the absence of domestic repair capability and the lack of a sufficiently strong critical-infrastructure framework.

Addressing these issues would require cooperation between government agencies, telecom companies, technology firms and infrastructure providers.

What India Could Do Next

1. Develop More Cable Landing Locations

India could reduce concentration risk by encouraging additional landing stations across different coastal regions.

More geographic diversity would make it harder for a single incident to affect a large share of international connectivity.

2. Build Shared Repair Capacity

A dedicated domestic repair ecosystem could reduce dependence on foreign vessels.

Instead of every cable owner maintaining its own ship, several companies could potentially share repair resources. Such a model could make specialised infrastructure economically viable while ensuring faster emergency response.

3. Strengthen Security at Landing Stations

Cable landing stations are strategically important physical facilities.

Improved surveillance, access controls, emergency planning and coordination with maritime authorities could help protect them from accidental and intentional damage.

4. Encourage Domestic Capability

India could also encourage domestic companies to develop expertise in cable installation, maintenance, specialised vessels and related equipment.

Building these capabilities would strengthen the wider telecommunications supply chain and potentially create new industrial opportunities.

What This Means for Ordinary Internet Users

For most people, subsea cables remain invisible.

If the network works properly, users simply open an app, make a video call, transfer money or stream content without thinking about the infrastructure carrying their data.

But that invisibility can make the system easy to overlook.

The new I-2SEA project is therefore important for another reason: it draws attention to the physical foundations of India's digital economy.

A stronger network can mean greater resilience, but only when new infrastructure is accompanied by broader planning.

Frequently Asked Questions

What is the I-2SEA cable?

I-2SEA is a planned subsea fibre-optic cable system connecting India with Singapore and Malaysia. It is backed by major technology and telecommunications companies including Microsoft, Singtel, Tata Communications and NEC.

Why are submarine cables important?

Submarine cables carry huge volumes of international internet traffic between countries and continents. They support cloud computing, financial services, communications, business networks and many other digital services.

Does a damaged submarine cable shut down India's internet?

Not necessarily. Internet traffic can often be redirected through other cables. However, multiple failures or heavy dependence on limited alternative routes can cause congestion, slower services and disruptions.

Why is India's cable landing infrastructure a concern?

A significant number of cables are concentrated around a relatively small section of Mumbai's coastline. Such concentration can increase the impact of a major incident affecting that area.

Why does India need its own cable repair capability?

Domestic repair capacity could reduce waiting times and dependence on foreign vessels. It could also become particularly valuable during geopolitical emergencies or periods when international repair resources are stretched.

Conclusion

The I-2SEA subsea cable is a positive development for India's digital future. Its additional connectivity to Southeast Asia can support the country's growing cloud, AI and technology ecosystem while providing greater route diversity.

But the bigger lesson is that one new cable cannot solve every weakness in India's digital infrastructure.

India's dependence on international data networks is growing rapidly, making resilience just as important as capacity. More landing stations, stronger protection, domestic repair capabilities and better public-private coordination could help ensure that the country's digital economy remains reliable even when individual infrastructure links fail.

The internet may feel wireless and intangible, but much of its most important infrastructure sits on the ocean floor. As India becomes a larger digital and AI economy, protecting those invisible connections will increasingly become a matter of economic security and national resilience.