Top 10: Data Centre Companies in Europe

Europe’s booming data centre industry is crucial to its digital economy, underpinning everything from hyperscale cloud to AI innovation. 

The sector’s leading players deliver resilient, sustainable and highly connected facilities in the continent’s biggest technology hubs. 

While legacy names continue to expand, specialist developers and colocation experts are also pushing the boundaries – driving record investments and powering the next generations of enterprise IT and AI. 

Here, we profile the top ten data centre companies shaping Europe’s digital future.

10. Telehouse

• Employees: ~265 (Telehouse Europe)
• CEO: Kenkichi Honda (MD of Telehouse Europe)
• Founded: 1988

Telehouse pioneered the European carrier-neutral data centre, opening its first London Docklands facility in 1990. 

Now with over 40+ sites in 10+ countries, Telehouse’s ecosystem boasts premium connectivity and reliability, providing a hub for the London Internet Exchange (LINX). 

A strong emphasis on security, green credentials and continuous expansion defines its approach. 

Telehouse London maintains impressive uptime and is renowned for its integrated support and resilience across major European markets.

9. Iron Mountain

• Employees: 28,850
• CEO: William Meaney 
• Founded: 1951 

Iron Mountain is synonymous with security – offering ultra-secure, sustainable colocation across the EMEA region. 

With European facilities in London, Frankfurt, Amsterdam and Madrid, Iron Mountain’s focus is on compliance, green energy and supporting digital transformation at scale. 

Its global platform spans 30 locations, with five in Europe, and its customers include leading hyperscale and enterprise clients. Iron Mountain delivers managed, sustainable services in both new and emerging European markets.

8. CyrusOne

• Employees: ~800
• CEO: Eric Schwartz
• Founded: 2000

CyrusOne continues rapid strategic expansion – especially in Germany, where it has multiple high-capacity facilities in Frankfurt that support sustainability with waste-heat reuse and biodiversity initiatives. 

Holding over 50 global data centres, including major hubs in London and Paris, CyrusOne is committed to hitting net zero by 2030. 

Reliability, efficiency and energy performance underpin its offering, with ongoing investments to support cloud, AI and hyperscale workloads.

7. Global Switch

• Employees: ~420
• CEO: Ashley Muldoon
• Founded: 1998

Operating Tier III+ network-dense data centres in major European cities, Global Switch is known for large-scale, robust colocation. 

With a strategic focus on sustainability, the company continuously invests in green technology – including industry-leading liquid cooling infrastructure – to meet AI and high-density standards. 

Its London headquarters anchors a footprint extending to Amsterdam, Paris, Madrid, and Frankfurt, serving financial services, hyperscalers, and government clients.

6. VIRTUS Data Centres

• Employees: ~250
• CEO: Thomas Ee
• Founded: 2008

VIRTUS is the UK’s largest pure-play data centre provider, with expansion into Berlin and Milan. 

The company’s AI-ready facilities, environmental standards (carbon zero) and focus on high-performance computing distinguish its offer. 

With new campuses and a rising European profile, VIRTUS leverages flexible infrastructure, ISO accreditations and a strong commitment to powering the next wave of digital innovation.

5. STACK Infrastructure

• Employees: ~1,000
• CEO: Brian Cox (Interim, STACK EMEA)
• Founded: 2019

STACK Infrastructure, with its EMEA headquarters in London, delivers rapid, scalable cloud and colocation solutions tailored for hyperscale and enterprise clients. 

STACK is notable for embracing ESG leadership and innovation – coalescing around values of speed, scale, certainty and responsibility. 

Its European operations span major cities with a focus on hyperscale expansion and supporting large-scale transformation programmes.

4. NTT Global Data Centers

• Employees: ~800
• CEO: Douglas Adams
• Founded: 2018

Operating as the data centre division of the Japanese technology behemoth NTT Group, NTT Global Data Centers is one of the top operators in Europe and the world.

It offers a comprehensive suite of services across its 40+ European data centres, providing end-to-end solutions with robust performance guarantees.

Known for best-in-class resilience, NTT integrates global connectivity, advanced security and sustainable solutions at scale, serving hyperscale, government, cloud-native customers and more. 

NTT, the company’s parent group, embraces acquisitions, new builds and expansion from its European platform.

3. Vantage Data Centers

• Employees: Estimated ~1,300
• CEO: Sureel Choksi
• Founded: 2010

Vantage Data Centers is a leader in the European hyperscale race, developing and acquiring large, sustainable campuses in Frankfurt, Berlin, Cardiff, Milan, Warsaw and Zurich. 

The platform operates and is expanding more than 2.6GW of capacity worldwide. 

An unwavering focus on delivering scalable, energy-efficient, AI-optimised data centres – coupled with major investments – keeps Vantage at the vanguard of the sector.

2. Equinix

• Employees: ~14,000
• CEO: Adaire Fox-Martin
• Founded: 1998

Equinix is one of the world’s largest interconnection platforms, with dozens of European data centres and a global presence in 75 metropolitan areas. 

Equinix pioneers dense connectivity – linking clouds, telecoms and finance hubs – to serve 2,000+ NSPs and 3,000+ cloud and IT providers. 

Under the guidance of Adaire Fox-Martin, Equinix enables clients to thrive in the era of hybrid IT, cloud and AI. Its innovation, security and market reach are hallmarks of the global brand.

Equinix underpins the infrastructure behind many of Europe’s key financial, telco, manufacturing and digital services. 

With its robust expansion, Equinix remains vital to enterprise transformation and the continent’s digital economy.

1. Digital Realty

• Employees: 3,600+
• CEO: Andy Power
• Founded: 2004

Digital Realty is Europe’s largest provider of carrier-neutral data centres, with a global platform of 300+ facilities and a leading European portfolio following its Interxion acquisition in 2020. 

It delivers the full range of secure, scalable and sustainable infrastructure needed for cloud, AI and hybrid computing. 

Renowned for its climate action pledges, energy efficiency leadership and renewable integration, Digital Realty is trusted by over 3,400 customers in EMEA. Its London, Dublin, Amsterdam, Frankfurt and Paris campuses are central to the continent’s digital transformation.

Digital Realty’s scale and ambition continue to break new ground in data centre innovation and operational excellence, cementing its leadership in Europe and globally.