Visakhapatnam to Become India’s Third Subsea Cable Gateway: Why It Matters for Digital and AI Infrastructure
India’s international internet infrastructure is set for a major shift as Visakhapatnam emerges as a new submarine-cable gateway on the east coast, reducing the country’s heavy dependence on Mumbai and Chennai.
Google is building a new international subsea gateway at Visakhapatnam as part of its America–India Connect initiative and its large AI infrastructure investment in Andhra Pradesh. The project will bring multiple international fibre-optic routes to the city and connect India more directly with Singapore, Australia, South Africa and global networks extending towards the United States.
This may sound like a telecom story, but its importance is much wider. Submarine cables form the physical backbone of the global digital economy. Cloud computing, online banking, video calls, AI services, international financial transactions and most cross-border internet traffic ultimately depend on these cables.
For UPSC and State PCS students, the topic connects digital infrastructure, artificial intelligence, critical infrastructure, cybersecurity, economic security and maritime geography.
Why is Visakhapatnam in the news?
India’s international cable landings have traditionally been concentrated around Mumbai on the western coast and Chennai on the eastern coast.
Visakhapatnam is now being developed as another major international gateway.
Google’s America–India Connect programme will establish a new subsea gateway in Visakhapatnam, with new paths linking India towards:
- Singapore,
- South Africa,
- Australia, and
- wider global networks connecting with the United States.
The Government of India has also said that Google’s AI Hub project in Visakhapatnam includes multiple international subsea cable landings, creating an additional high-capacity and low-latency digital route for India.
This is why Visakhapatnam is increasingly being described as India’s third major international digital gateway, after Mumbai and Chennai.
What is a Submarine Cable?
A submarine cable is a fibre-optic cable laid across the seabed to carry digital information between countries and continents.
Inside the cable are very thin strands of glass fibre.
Digital information is converted into pulses of light and transmitted through these fibres at extremely high speed.
The basic journey looks like this:
Data Centre
↓
Terrestrial Fibre Network
↓
Cable Landing Station
↓
Submarine Fibre-Optic Cable
↓
Foreign Landing Station
↓
Global Internet Network
This physical infrastructure is what allows someone in India to access a cloud server, website or digital service located thousands of kilometres away.
Satellites vs Submarine Cables
It is easy to imagine that international internet traffic mainly moves through satellites.
In reality, submarine fibre-optic cables carry the overwhelming majority of global cross-border data traffic.
Satellites remain useful for:
- remote regions,
- ships and aircraft,
- emergency communications,
- defence applications and
- areas without fibre connectivity.
But for extremely large volumes of international data, fibre-optic cables generally provide:
higher capacity + lower latency + lower cost
This makes submarine cables critical infrastructure for the modern economy.
What is a Cable Landing Station?
A Cable Landing Station (CLS) is the point where a submarine cable reaches land and connects with the domestic telecom network.
The landing station acts as the bridge between:
international undersea network
and
India’s terrestrial fibre and data centres.
Once data reaches the landing station, it can move through domestic fibre networks to cities, businesses, cloud platforms and consumers.
Because of this role, a cable landing station is not simply a telecom building. It is a piece of strategic digital infrastructure.
Why Mumbai and Chennai Have Dominated So Far
Mumbai became India's main western digital gateway because of its strong links towards:
- the Middle East,
- Europe and
- Africa.
Chennai became a major eastern gateway because it offers natural connectivity towards:
- Singapore,
- Southeast Asia and
- East Asia.
Over time, a large share of international cable capacity became concentrated around these two locations.
This was efficient, but it also created a risk.
If several cables around one major landing zone are damaged or disrupted, international internet connectivity can be affected.
Why a Third Gateway Matters
The biggest advantage of Visakhapatnam is route diversity.
Imagine India’s international connectivity as a road network.
If nearly all traffic depends on two major bridges, an accident on either bridge creates a serious problem.
Building a third bridge gives traffic another path.
The same logic applies to internet cables.
Mumbai + Chennai + Visakhapatnam
creates a more diversified network than dependence on only Mumbai and Chennai.
Google itself says the new Vizag gateway will add vital route diversity and strengthen the resilience of India’s digital backbone.
Red Sea Disruptions Show Why Diversification Matters
Submarine cables are vulnerable to physical and geopolitical risks.
They can be damaged by:
- ship anchors,
- fishing activity,
- earthquakes,
- undersea landslides,
- sabotage,
- military conflict and
- equipment failures.
Recent instability around West Asia and the Red Sea has drawn fresh attention to the risks created when too much global digital traffic depends on a limited number of corridors.
Developing stronger eastward and southward routes gives India another layer of protection if western cable routes face disruption.
Mains Insight
Digital resilience increasingly depends on geographical diversification, not merely on having more bandwidth.
Google’s America–India Connect
Google announced the America–India Connect initiative in February 2026.
It is part of Google's wider AI and digital infrastructure investment in India.
The project includes:
- a new international gateway at Visakhapatnam,
- three new subsea paths connecting India with Singapore, South Africa and Australia,
- additional strategic fibre routes connecting India with global networks.
One route will link Vizag towards Singapore and connect onwards through Google's Pacific network.
Another will link the Indian east coast towards South Africa, creating an alternative path towards the Atlantic and the American east coast.
The result is not simply faster internet.
It gives India more choices for routing international data.
Visakhapatnam and Google’s AI Hub
The cable project is closely connected to Google's major AI infrastructure investment in Visakhapatnam.
Google announced an investment of around $15 billion over five years from 2026 to 2030 to establish its first AI hub in India.
The project includes:
- large-scale computing infrastructure,
- AI data-centre capacity,
- international subsea connectivity,
- clean-energy infrastructure and
- domestic fibre connectivity.
The Government of India says the hub will provide high-performance, low-latency services for businesses, startups and organisations building AI applications.
This explains why cables and data centres are being developed together.
A powerful data centre without strong international connectivity would face bottlenecks.
Why AI Needs Better Submarine Cables
Artificial intelligence requires enormous movement of data.
AI systems may need to transfer:
- training datasets,
- model parameters,
- cloud workloads,
- inference requests,
- software updates and
- large volumes of enterprise data
between data centres located in different countries.
This creates demand for:
high bandwidth + low latency + reliability
Submarine cables provide this international backbone.
As AI adoption grows, physical infrastructure becomes more important, not less.
The AI economy may look virtual, but underneath it are:
data centres + fibre cables + power grids + chips + cooling systems.
What Does “Low Latency” Mean?
Latency simply means delay.
When you send data to a server and receive a response, some time is required for the information to travel.
Lower latency means a faster response.
This is especially important for:
- cloud computing,
- financial trading,
- gaming,
- video conferencing,
- industrial automation and
- AI inference.
A direct cable route can reduce the need for data to travel through distant intermediate locations.
That can improve performance.
A Correction About the I-2SEA Cable
There has been some confusion in current-affairs summaries about another project called the India–Southeast Asia Submarine Cable System (I-2SEA).
The I-2SEA consortium includes Lightstorm, Microsoft, Singtel and Tata Communications.
According to the project’s official announcement, the approximately 3,600-km cable will connect India, Malaysia and Singapore and is expected to be ready for service in Q4 2029.
However, its officially announced Indian landing locations are:
- Machilipatnam in Andhra Pradesh, and
- South Chennai.
So I-2SEA strengthens the wider Andhra Pradesh–east coast digital corridor, but it should not be described as a confirmed Visakhapatnam landing based on the official project announcement.
This distinction is useful because UPSC notes should separate different cable projects accurately.
Why Machilipatnam Also Matters
The I-2SEA project shows that Andhra Pradesh's importance in India's digital infrastructure is not limited to Visakhapatnam.
The Machilipatnam landing is designed to provide a shorter connection towards Hyderabad, one of India's largest cloud and data-centre markets.
This means the broader eastern digital corridor could eventually include:
Visakhapatnam + Machilipatnam + Chennai + Hyderabad
linked through submarine and terrestrial fibre networks.
Such a network can strengthen eastern India's role in the country's digital economy.
Subsea Cables and Data Centres Grow Together
A data centre becomes much more valuable when it has direct access to international connectivity.
Similarly, a cable landing point attracts:
- cloud companies,
- telecom operators,
- data centres,
- content-delivery networks,
- financial technology companies and
- AI infrastructure providers.
This creates a cluster effect.
Subsea cable lands
↓
Connectivity improves
↓
Data centres arrive
↓
Cloud and AI services expand
↓
More companies demand connectivity
↓
More infrastructure investment follows
This helps explain why coastal cities can emerge as major digital-economy hubs.
Why Visakhapatnam is Well Placed
Visakhapatnam has several geographical and economic advantages.
It has:
- a long coastline,
- access to the Bay of Bengal,
- an important commercial port,
- proximity to Southeast Asian sea routes,
- growing industrial infrastructure and
- new data-centre investment.
Its eastern location makes it particularly useful for routes towards:
Southeast Asia + Australia + Pacific networks.
This complements rather than replaces Mumbai's western connectivity.
Digital Infrastructure is Now Strategic Infrastructure
Historically, strategic infrastructure usually meant:
- ports,
- airports,
- railways,
- power plants and
- highways.
Today the list also includes:
- data centres,
- cloud infrastructure,
- semiconductor facilities,
- telecom networks and
- submarine cables.
Why?
Because governments, banks, hospitals, defence networks and businesses increasingly depend on digital connectivity.
A major cable disruption can therefore create economic and security problems.
Submarine Cables and Cybersecurity
Cybersecurity is usually associated with hacking.
But digital security has a physical side as well.
A cable can be:
- cut accidentally,
- damaged during conflict,
- monitored,
- sabotaged or
- disrupted.
This means protecting digital infrastructure requires both:
Cybersecurity
and
Physical infrastructure security.
India therefore needs:
- cable-route monitoring,
- repair capacity,
- redundant routes,
- secure landing stations and
- coordination between telecom and security agencies.
What is Digital Sovereignty?
Digital sovereignty broadly refers to a country's ability to maintain meaningful control over its digital infrastructure, data and technology ecosystem.
It does not mean disconnecting from the global internet.
Instead, it can involve reducing excessive dependence on a small number of:
- foreign networks,
- platforms,
- data centres or
- international routes.
A diversified submarine-cable system improves India's ability to keep digital services functioning even during external disruptions.
Economic Benefits
Better international connectivity can also produce economic gains.
Data Centres
More cables make India more attractive for large cloud and AI data-centre investments.
IT and IT-enabled Services
Indian technology companies depend heavily on reliable links with customers abroad.
Financial Services
Banks and financial markets need high-speed and secure international connectivity.
Startups
Cloud-based startups benefit from lower latency and stronger digital infrastructure.
Digital Exports
Reliable connectivity supports India's exports of:
- software,
- cloud services,
- digital content and
- professional services.
So subsea cables are increasingly part of India's trade infrastructure as well.
What Are the Challenges?
Building a major subsea gateway is not automatic proof of digital resilience.
India still needs to deal with several issues.
1. Inland Fibre Connectivity
A landing station is useful only if strong terrestrial fibre networks connect it with inland cities and data centres.
2. Cable Repair Capability
When an undersea cable breaks, specialised ships and equipment are required for repair.
Repair delays can become a national vulnerability.
3. Regulatory Complexity
Cable operators need permissions involving telecom, coastal, maritime and security authorities.
TRAI has continued examining the licensing and regulatory framework for submarine cable landings in India.
4. Security
Landing stations must be protected because they are critical infrastructure.
5. Energy Demand
Large data centres consume substantial electricity.
Their growth needs to be accompanied by reliable power and cleaner energy.
Environmental Questions
Submarine cables themselves generally have a limited footprint once installed, but construction still requires careful environmental management.
Near the coast, cable installation may interact with:
- fisheries,
- coastal ecosystems,
- marine habitats and
- other seabed infrastructure.
Data centres create a separate challenge because they require large amounts of electricity and cooling.
Google has said its Visakhapatnam infrastructure will be supported by new clean-energy generation, transmission and storage projects in Andhra Pradesh.
What Should India Do Next?
India's goal should not simply be to have more cables.
It should build a resilient national digital network.
That means:
Diversify Landing Locations
Avoid excessive concentration in a few cities.
Diversify International Routes
Develop both eastern and western connectivity.
Strengthen Domestic Fibre
Connect landing stations efficiently with major inland data-centre markets.
Build Repair Capacity
Reduce dependence on foreign cable-repair resources.
Improve Physical Security
Treat landing stations as critical infrastructure.
Encourage Competition
Multiple operators and routes can reduce dependence on a single provider.
Link Digital Growth with Clean Energy
AI and data-centre expansion must be supported by sustainable power infrastructure.
Prelims Quick Revision
| Topic | Key Fact |
|---|---|
| Visakhapatnam | Emerging major international subsea gateway |
| Existing major hubs | Mumbai and Chennai |
| America–India Connect | Google-led connectivity initiative |
| New Vizag routes | Singapore, South Africa and Australia |
| Google India AI Hub | Visakhapatnam |
| Google investment | About $15 billion, 2026–2030 |
| I-2SEA | India–Malaysia–Singapore cable |
| I-2SEA length | About 3,600 km |
| I-2SEA India landings | Machilipatnam and South Chennai |
| I-2SEA target | Q4 2029 |
Important distinction
America–India Connect → Visakhapatnam
I-2SEA → Machilipatnam + South Chennai
Do not mix the two projects.
UPSC/State PCS Relevance
GS Paper III
- Digital infrastructure
- Artificial intelligence
- Cybersecurity
- Critical infrastructure
- Science and technology
- Economic infrastructure
GS Paper II
- Digital governance
- Regulation of strategic infrastructure
Geography
- Bay of Bengal
- Maritime connectivity
- Coastal economic geography
Possible UPSC Mains Question
“Submarine cables have become as important to the digital economy as ports and shipping lanes are to physical trade.” Discuss in the context of India's efforts to diversify international cable landing infrastructure.
Answer Approach
Begin by explaining that most international digital traffic depends on submarine fibre-optic networks.
Then discuss India's concentration around Mumbai and Chennai.
Use Visakhapatnam as an example of:
- route diversification,
- AI infrastructure,
- lower latency,
- digital resilience and
- economic security.
Also mention challenges such as:
- cyber and physical security,
- cable repair capacity,
- inland fibre,
- regulatory coordination and
- data-centre energy demand.
Conclude by arguing that submarine cables should be treated as strategic national infrastructure.
Conclusion
Visakhapatnam's emergence as a new international subsea gateway marks an important change in India's digital geography.
For years, much of the country's international connectivity has depended on Mumbai and Chennai. Adding a major third gateway provides another route for data and makes the network more resilient.
But the real significance goes beyond faster internet.
AI, cloud services, banking, digital exports and government platforms all depend on physical infrastructure that most users never see.
In that sense, the cables lying on the floor of the ocean are becoming as important to India's digital future as highways, ports and power grids were to earlier phases of economic growth.
Sources
Read Google’s America–India Connect announcement
Read Google’s AI Hub announcement
