List of data centers in India: Ranked by reliability and scalability

India is a massively growing economy, every day dozens of startups are being formed; every growing economy needs computer servers to ease and scale its business operations. That’s the main reason why the data centers are in demand too.

India’s data center market has changed fast since this guide was first published.

Operational capacity is now roughly 2 GW, with industry projections pointing to about double that by 2028, and power availability is becoming the main constraint on growth.

The Government of India (GoI) made a mandatory guideline to keep local data stored in Indian data centers only for various security reasons, businesses are looking for Indian data centers to begin their businesses.

If you need to host servers, run disaster recovery, or place workloads close to Indian users, the provider you choose matters more than ever. This guide ranks the main data center providers in India by reliability and scalability, explains what Indian law actually requires on data residency, and gives you a checklist for choosing one.

Quick ranking

Rank	Provider	Ownership	Reliability	Scalability	Best for
1	STT GDC India	Singapore (STT GDC), Tata Communications holds a minority stake	9/10	9/10	Large enterprises, BFSI, multi-city footprint.
2	CtrlS	Indian	9/10	8/10	Mission-critical and regulated workloads.
3	NTT Global Data Centers India (Netmagic)	Japanese	8/10	9/10	Hyperscale and carrier-neutral colocation.
4	Nxtra by Airtel	Indian	8/10	8/10	Network-heavy and edge workloads.
5	Yotta	Indian	7/10	9/10	AI and GPU capacity, large Navi Mumbai campus.
6	Sify	Indian	8/10	7/10	Enterprises wanting managed services plus colocation.
7	AdaniConneX	Indian–US joint venture	7/10	8/10	Hyperscaler-scale builds.
8	Reliance (Jio, Digital Connexion)	Indian	7/10	8/10	AI-scale capacity, Jamnagar and Chennai.
9	Iron Mountain Data Centers (formerly Web Werks)	US	7/10	6/10	Mid-size colocation, compliance-focused buyers.
10	ESDS	Indian	7/10	6/10	SMEs and government-linked managed cloud.

Scores are an editorial assessment based on publicly reported information, not an independent audit. See “How we ranked!” below.

How we ranked!

Reliability (50%) looks at facility redundancy ratings (Uptime Institute Tier or TIA-942 Rated levels where publicly claimed), number of sites available for disaster recovery, compliance certifications such as ISO 27001 and PCI DSS, operating track record, and the regulated customers a provider serves.

Scalability (50%) looks at operational megawatts, the construction pipeline, campus headroom for expansion, number of cities, and financial backing.

Two cautions. First, capacity figures vary between sources because some count only commissioned IT load while others include planned capacity, so treat every MW number as approximate. Second, a rating is not a guarantee. Always check the provider’s contractual SLA and ask for the actual certificate for the specific facility you will use.

Understanding data residency in India.

The Government of India (GoI) made a guideline to keep local data in India, but the reality is more nuanced as things are partially applicable to limited sectors only:

There is no blanket localisation law.
The Digital Personal Data Protection Act, 2023 and the DPDP Rules notified in November 2025 do not require all personal data to be stored in India.
Sector regulators are stricter.
The RBI’s April 2018 circular requires payment system data to be stored only in India, and backups and DR copies for that data also need to stay in India. IRDAI (insurance) and SEBI (capital markets) have their own requirements.
Practical effect.
If you handle payments, banking, insurance or securities data, you need in-India primary and DR sites. Everyone else should still consider Indian hosting for latency and for easier compliance.

This is general information, not legal advice.

Confirm your obligations with a qualified professional.

The ranked list…

1. STT GDC India.

The largest dedicated colocation operator in the country, with roughly 30 data centers across about 10 cities and around 400 MW of IT load, as reported in 2026.

It was created when STT bought a 74% stake in Tata Communications’ data center business, and Tata Communications kept about 26%.

It has announced plans to roughly double capacity over the next few years.

Strengths: Footprint, carrier density, enterprise credibility.
Trade-off: Premium pricing.

2. CtrlS.

Hyderabad-headquartered and founded in 2008, CtrlS runs one of Asia’s largest Rated-4 networks with roughly 245 MW operational.

It opened a two-facility, 72 MW park in Chennai and is building the Chandan Valley campus near Hyderabad, listed at about 612 MW.

Strengths: Top-tier redundancy ratings, strong BFSI base.
Trade-off: The big campus is not expected to be fully operational until 2027–28.

3. NTT Global Data Centers India (Netmagic).

NTT is Japanese, not American as the old list stated, and it owns Netmagic.

Its India portfolio includes 16 operational data centers with about 237 MW, plus five more in construction, according to lender disclosures. The NAV2 campus in Navi Mumbai is a 500 MW site able to support about 336 MW of IT load.

Strengths: Hyperscale-ready campuses, liquid cooling for AI loads.
Trade-off: Capacity is concentrated in Mumbai.

4. Nxtra by Airtel.

Airtel’s data center arm reported about 300 MW in March 2026, spread across 15 data centers in eight markets, and announced a USD 1 billion investment aiming for 1 GW.

Strengths: telecom-grade network, edge presence.
Trade-off: the 1 GW target is a multi-year goal.

5. Yotta.

Part of the Hiranandani Group, Yotta’s NM1 campus in Navi Mumbai spans about 820,000 sq ft with space for roughly 7,200 racks and is marketed as Tier IV.

The campus is planned to scale to GW levels, and a Greater Noida site is planned to grow from 60 MW to 250 MW.

Strengths: GPU and AI infrastructure, scale ambition.
Trade-off: Newer operator, and commissioned-capacity figures vary by source.

6. Sify.

One of India’s longest-running data center and managed services players, with 14 data centers across six cities. Reported capacity ranges from about 130 MW to 190 MW depending on source and date, with AI-ready projects in Navi Mumbai and Chennai.

Sify holds ISO 27001 and PCI DSS certifications.

Strengths: Managed services, track record.
Trade-off: Smaller than the top four.

7. AdaniConneX.

A joint venture between Adani Enterprises and EdgeConneX.

It lists about 166 MW in Navi Mumbai under construction and a planned 1 GW AI campus in Visakhapatnam with Google for 2026–2030.

Strengths: Financial backing and hyperscaler orientation.
Trade-off: Much of the capacity is still being built.

8. Reliance (Jio and Digital Connexion).

Reliance announced a Jamnagar AI data center at 1 GW with ambitions of up to 3 GW. In June 2026 it announced a 168 MW built-to-suit facility there for Meta.

Separately, the Digital Connexion venture (Reliance, Brookfield and Digital Realty) opened a 100 MW campus in Chennai in 2024.

Strengths: Energy access and scale.
Trade-off: Much of Reliance’s capacity is aimed at hyperscale and captive use rather than small colocation.

9. Iron Mountain Data Centers (formerly Web Werks).

Web Werks was integrated and renamed Iron Mountain Data Centers from April 1, 2025, after Iron Mountain moved to full ownership.

Strengths: Compliance culture, mid-size flexibility.
Trade-off: Smaller scale than the leaders.

10. ESDS.

An India-based managed cloud and data center provider popular with SMEs and public-sector workloads. Verify its current facility list before committing, as it is smaller than the providers above.

Hyperscale cloud regions in India.

AWS, Microsoft and Google do not sell colocation, but they matter if you want cloud services hosted in India. The list below reflects widely published region information; confirm on each provider’s site before deploying.

Cloud	India regions	Notes
AWS	Mumbai (ap-south-1, since 2016), Hyderabad (ap-south-2, since 2022).	Three availability zones in each, plus a Delhi Local Zone.
Microsoft Azure	Central India (Pune), South India (Chennai), West India (Mumbai).	Check Mumbai availability for new deployments.
Google Cloud	Mumbai (asia-south1), Delhi NCR (asia-south2).	No Hyderabad region.

For disaster recovery inside India, a Mumbai-plus-Hyderabad pair on AWS or a Mumbai-plus-Delhi pair on Google Cloud keeps both sites in-country.

Providers that need a different treatment.

Tata Communications.
It sold the majority of its data center business to STT GDC, so most of that capacity now sits under the STT brand. Tata Communications today focuses on network and cloud services.
NPCI.
It runs the national payments infrastructure for UPI and RuPay. It is not a hosting option for businesses, so it does not belong in a “choose a provider” ranking.
Net4India.
We could not verify its current facility ownership, so it is not ranked here. Re-check before listing it.

Where India’s data centers are?

Mumbai and Navi Mumbai. The largest hub, driven by subsea cable landings and dense enterprise demand. Industry trackers put Maharashtra at roughly half of national capacity.
Chennai. The second-largest hub, with strong cable connectivity to Southeast Asia and several large campuses.
Delhi NCR (Noida and Greater Noida). Fast-growing for northern India, with incentives drawing new builds.
Hyderabad. Home to CtrlS and a large hyperscaler presence, with big campuses under construction.
Bengaluru, Pune and Kolkata. Important for enterprise, IT services and eastern India.

How to choose a data center provider?

Map your compliance needs first. Payments, insurance and securities data have in-India requirements, including DR.
Check redundancy for the exact facility, not just the brand, and request the certificate.
Plan for two cities. Primary and DR sites in different seismic and power zones reduce risk.
Ask about power and cooling headroom if you expect AI or high-density racks.
Review network options. Carrier-neutral sites give you more choice.
Read the SLA. Look at uptime percentage, credits, and exclusions.
Ask about sustainability and renewable sourcing if it matters for your reporting.

Frequently asked questions.

Which is the largest data center company in India? By reported operational capacity, STT GDC India leads with about 400 MW, followed by providers such as Nxtra, CtrlS and NTT.

Which city has the most data centers in India? Mumbai and Navi Mumbai, by a wide margin, with Chennai second.

Is it mandatory to store data in India? Not as a general rule. Sector rules apply for payments (RBI), insurance and securities, which require in-India storage for covered data.

What is the difference between Uptime Tier and TIA-942 Rated levels? Both describe redundancy levels, but they are different certification schemes run by different bodies. Ask providers which one they hold and for which facility.

Are AWS, Azure and Google Cloud data centers in India? Yes. All three operate Indian cloud regions, listed in the table above.