Company lists · Data refreshed September 2026

Top 13 Managed cloud infrastructure services based in Madrid, Spain

RevenueBase identified 48 managed cloud infrastructure services headquartered in Madrid, Spain as of September 2026 and tracks 473 professional contacts across them, including 62 with verified work emails. Across Spain, Madrid is the largest hub for this category.

This list covers managed cloud infrastructure services headquartered in Madrid, Spain, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 28, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 28, 2026 86% judged on-target in blind review
48Companies
473Contacts tracked
62Verified emails
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The 13 largest managed cloud infrastructure services based in Madrid, Spain

Ranked by team size
Top 13 of 48 managed cloud infrastructure services based in Madrid, Spain, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to managed cloud infrastructure services: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceMadrid, SpainHQ checked Sep 28, 202651-20062 contacts →

Partial evidence

“At Realnaut, we excel in delivering cutting-edge cloud services and tailored solutions designed specifically to meet your business needs.”

Source: RevenueBase Database · checked Sep 28, 2026
2Strong evidenceMadrid, SpainHQ checked Sep 28, 202651-20050 contacts →

Strong evidence

“OpenNebula Systems is the open source company behind OpenNebula, supporting its community and providing SLA-based support, consulting, and managed cloud services to corporate…”

Source: RevenueBase Database · checked Sep 28, 2026
3Strong evidenceMadrid, SpainHQ checked Sep 28, 202611-5028 contacts →

Strong evidence

“Cartagon is the leading provider of Managed Cloud Services in Spain, specialized in hybrid cloud solutions.”

Source: RevenueBase Database · checked Sep 28, 2026
4Partial evidenceMadrid, SpainHQ checked Sep 28, 202611-5026 contacts →

Partial evidence

“Cloud Thinking Serverless · Microservices · IoT · AWS”

Source: RevenueBase Database · checked Sep 28, 2026
5Indirect evidenceMadrid, SpainHQ checked Sep 28, 202611-5020 contacts →

Indirect evidence

“Administración sistemas informáticos.”

Source: RevenueBase Database · checked Sep 28, 2026
6Indirect evidenceMadrid, SpainHQ checked Sep 28, 20261-109 contacts →

Indirect evidence

“ESTOYENREMOTO SL.”

Source: RevenueBase Database · checked Sep 28, 2026
7Indirect evidenceMadrid, SpainHQ checked Sep 28, 202611-509 contacts →

Indirect evidence

“Founded in 2007, offices in Madrid and Barcelona and hundreds of business reference.”

Source: RevenueBase Database · checked Sep 28, 2026
8Indirect evidenceMadrid, SpainHQ checked Sep 28, 202611-509 contacts →

Indirect evidence

“Interhost es una empresa especializada en alojamiento de Sistemas de Información y gestión de CPD, de capital enteramente español, integrada en el Grupo SATEC, con dieciocho años…”

Source: RevenueBase Database · checked Sep 28, 2026
9Partial evidenceMadrid, SpainHQ checked Sep 28, 202611-508 contacts →

Partial evidence

“We are Private Cloud experts.”

Source: RevenueBase Database · checked Sep 28, 2026
10Partial evidenceMadrid, SpainHQ checked Sep 28, 20261-108 contacts →

Partial evidence

“Como hache2i llevamos siendo partners de Google Cloud desde 2009 y para celebrar que cumplimos diez años hemos decidido comunicar nuestra visión con un nuevo nombre: ExtraMile…”

Source: RevenueBase Database · checked Sep 28, 2026
11Partial evidenceMadrid, SpainHQ checked Sep 28, 202611-507 contacts →

Partial evidence

“Los clientes valoran a Todo en Cloud como uno de los principales actores en el escenario de la Computación en la Nube Estan especializados en Arquitecturas distribuidas con…”

Source: RevenueBase Database · checked Sep 28, 2026
12Indirect evidenceMadrid, SpainHQ checked Sep 28, 202611-504 contacts →

Indirect evidence

“En Hopla!”

Source: RevenueBase Database · checked Sep 28, 2026
13Indirect evidenceMadrid, SpainHQ checked Sep 28, 202611-501 contacts →

Indirect evidence

“At Nube you get to play with the world’s most cutting-edge Microsoft, Amazon, Google and Dell/Quest technologies.”

Source: RevenueBase Database · checked Sep 28, 2026

Showing 13 of 48 managed cloud infrastructure services based in Madrid, Spain

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Managed cloud infrastructure services based in Madrid, Spain at a glance

As of Sep 28, 2026
13.1%Verified-email coverage
9.9Average contacts per company
1-10Median size (employees)
Sep 28, 2026Page data refreshed

Companies by employee count

1-10
24
11-50
19
51-200
2
501-1,000
2
10001+
1

Email recency for this list is measured across the whole Spain list rather than for Madrid, so it is reported there. Company counts and contact totals on this page are exact for Madrid, over 48 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among managed cloud infrastructure services, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Madrid, Spain whose own description of what they do matches “managed cloud infrastructure services”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names managed cloud infrastructure services), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among managed cloud infrastructure services, and records with no verified work email. Companies headquartered outside Madrid are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 62 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 28, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Managed cloud infrastructure services by metro in Spain

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names managed cloud infrastructure services, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many managed cloud infrastructure services are there based in Madrid, Spain?

RevenueBase identified 48 managed cloud infrastructure services headquartered in Madrid, Spain as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Realnaut, headquartered in Madrid, tops this list with the largest team on record.

Which city in Spain has the most managed cloud infrastructure services?

Madrid leads Spain with 48 headquartered companies, followed by Barcelona (37) and Sevilla (8).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 62 verified decision-maker contacts tracked across these 48 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 28, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.