Company lists · Data refreshed August 2026

Top 25 Cloud infrastructure support providers based in Spain

Name: Cloud infrastructure support providers based in Spain
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Aug 31, 2026 336 companies tracked

RevenueBase identified 336 cloud infrastructure support providers headquartered in Spain as of August 2026 and tracks 4,514 professional contacts across them, including 871 with verified work emails and 57 with mobile numbers. Madrid is the largest hub.

This list covers cloud infrastructure support providers headquartered in 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 August 31, 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 RevenueBase Smart Search rating on every row Refreshed Aug 31, 2026 86% judged on-target in blind review

336Companies

4,514Contacts tracked

871Verified emails

57Mobile numbers

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The 25 largest cloud infrastructure support providers based in Spain

Ranked by team size

Top 25 of 336 cloud infrastructure support providers based in Spain, ranked by team size, largest first. Data refreshed Aug 31, 2026. RevenueBase Smart Search rates how each company's information relates to cloud infrastructure support providers: 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	SIRT	Indirect evidence	Zaragoza, Spain	201-500	441 contacts →
	Indirect evidence “Experiencia, especialización y calidad de servicio son los tres valores clave en los que SIRT basa su actividad y la relación con sus clientes.” Source: RevenueBase Database · checked Aug 31, 2026
2	ABAST	Indirect evidence	Palma, Spain	501-1,000	386 contacts →
	Indirect evidence “Somos una compañía independiente con más de 30 años en el mercado Español implantando soluciones tecnológicas completas, innovadoras y estratégicas para nuestros clientes.” Source: RevenueBase Database · checked Aug 31, 2026
3	ARSYS	Partial evidence	Alcobendas, Spain	201-500	319 contacts →
	Partial evidence “Con más de 25 años en el mercado IT y 1,4 millones de servicios activos, Arsys acompaña a las empresas en su digitalización con los servicios de infraestructura cloud que…” Source: RevenueBase Database · checked Aug 31, 2026
4	Nextret	Indirect evidence	Barcelona, Spain	201-500	236 contacts →
	Indirect evidence “At NexTReT we are specialized in optimizing the ICT area of our clients and we help them acquire a high level of security with specialized solutions and services in…” Source: RevenueBase Database · checked Aug 31, 2026
5	Softwareone Spain	Indirect evidence	Barcelona, Spain	201-500	163 contacts →
	Indirect evidence “SoftwareOne es un proveedor tecnológico global líder en soluciones Software & MultiCloud que ayuda a las empresas en su proceso de transformación tecnológica, desde la evolución…” Source: RevenueBase Database · checked Aug 31, 2026
6	Tokiota	Indirect evidence	Barcelona, Spain	51-200	143 contacts →
	Indirect evidence “Somos una compañía joven, flexible, cercana y llena de talento.” Source: RevenueBase Database · checked Aug 31, 2026
7	Ipm, A Ricoh Company	Indirect evidence	Sant Cugat Del Valles, Spain	201-500	138 contacts →
	Indirect evidence “Con más de cuatro décadas de presencia y de experiencia en el mercado de la Península Ibérica, IPM, a Ricoh Company proporciona soluciones estratégicas en el ámbito de las…” Source: RevenueBase Database · checked Aug 31, 2026
8	Altostratus Part Of Telefónica Tech	Partial evidence	Madrid, Spain	51-200	128 contacts →
	Partial evidence “Altostratus is a professional and managed cloud services consultancy belonging to the Telefónica Tech holding.” Source: RevenueBase Database · checked Aug 31, 2026
9	Syntax Iberia	Indirect evidence	Bilbao, Spain	51-200	125 contacts →
	Indirect evidence “Driving innovation.” Source: RevenueBase Database · checked Aug 31, 2026
10	Myclouddoor	Partial evidence	Madrid, Spain	201-500	86 contacts →
	Partial evidence “myCloudDoor is a leading IT Business Consulting and Hands-On Services company specialized in successful Cloud Journey.” Source: RevenueBase Database · checked Aug 31, 2026
11	Netkia	Indirect evidence	Torrelavega, Spain	51-200	82 contacts →
	Indirect evidence “Netkia, soluciones en la nube Netkia nace como una solución integradora de los diferentes servicios a los que cualquier empresa o institución se enfrenta cuando va a dar su salto…” Source: RevenueBase Database · checked Aug 31, 2026
12	Serban Group - Europa	Indirect evidence	Bilbao, Spain	51-200	82 contacts →
	Indirect evidence “With a customer-centric vision, at Serban Group we cover the aspects that allow us to complete, in technological terms, all the success factors of any industry.” Source: RevenueBase Database · checked Aug 31, 2026
13	Realnaut	Partial evidence	Madrid, Spain	51-200	64 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 Aug 31, 2026
14	Recursos EN LA RED	Partial evidence	Elche, Spain	51-200	52 contacts →
	Partial evidence “Tecnología para empresas: Business Intelligence, Cloud, Ciberseguridad y más En Recursos en la Red ayudamos a pymes y medianas empresas a aprovechar el poder de los datos y la…” Source: RevenueBase Database · checked Aug 31, 2026
15	Opennebula Systems	Strong evidence	Madrid, Spain	51-200	51 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 Aug 31, 2026
16	Ackstorm	Partial evidence	Barcelona, Spain	51-200	47 contacts →
	Partial evidence “Ackstorm, con más de 14 años de experiencia en la Gestión e Integración de Sistemas, somos expertos en el Diseño, Implementación y Administración 24x7 de plataformas Cloud para…” Source: RevenueBase Database · checked Aug 31, 2026
17	Intercloud	Partial evidence	Madrid, Spain	51-200	38 contacts →
	Partial evidence “InterCloud is a leading Software-Defined Cloud Interconnect (SDCI) provider that transforms global connectivity, reduces network complexity and accelerates growth and innovation…” Source: RevenueBase Database · checked Aug 31, 2026
18	Microcad Informática	Partial evidence	Malaga, Spain	11-50	36 contacts →
	Partial evidence “Empresa de servicios IT localizada en Málaga (España) especializada en virtualización, cloud computing e IT outsourcing.” Source: RevenueBase Database · checked Aug 31, 2026
19	KIT Informática	Indirect evidence	Valencia, Spain	51-200	32 contacts →
	Indirect evidence “KIT INFORMATICA S.L, es una empresa fundada en 1987 que se ha consolidado como líder en la prestación de servicios informáticos al cliente en la Comunidad Valenciana y Murcia…” Source: RevenueBase Database · checked Aug 31, 2026
20	Cartagon	Partial evidence	Madrid, Spain	11-50	28 contacts →
	Partial evidence “Cartagon is the leading provider of Managed Cloud Services in Spain, specialized in hybrid cloud solutions.” Source: RevenueBase Database · checked Aug 31, 2026
21	Ausum Cloud	Partial evidence	Barcelona, Spain	11-50	27 contacts →
	Partial evidence “En Ausum Cloud, ofrecemos nuestra colaboración con un modelo de acompañamiento de 360 grados.” Source: RevenueBase Database · checked Aug 31, 2026
22	Pentasoft	Partial evidence	Madrid, Spain	11-50	26 contacts →
	Partial evidence “Cloud Thinking Serverless · Microservices · IoT · AWS” Source: RevenueBase Database · checked Aug 31, 2026
23	Adam - Data Center	Partial evidence	Barcelona, Spain	51-200	25 contacts →
	Partial evidence “We are a neutral data center provider with 30 years of experience, 18 of them managing critical infrastructure in our own Data Centers in Madrid and Barcelona.” Source: RevenueBase Database · checked Aug 31, 2026
24	Grupo Inova. Servicios Informáticos	Partial evidence	Sevilla, Spain	11-50	22 contacts →
	Partial evidence “Servicios informáticos, de virtualización, cloud computing y de ciberseguridad online y presencial, diseñados para la optimización de recursos y soluciones que mejoran tu negocio.” Source: RevenueBase Database · checked Aug 31, 2026
25	Redman TH	Indirect evidence	Majadahonda, Spain	11-50	22 contacts →
	Indirect evidence “Somos una empresa de servicios TIC para empresas que nació el año 1998, con la voluntad de ayudar a las empresas a implementar soluciones tecnológicas, instalando y respaldando…” Source: RevenueBase Database · checked Aug 31, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: cloud infrastructure support providers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names cloud infrastructure support providers.
Partial evidence: Its own public description names part of cloud infrastructure support providers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name cloud infrastructure support providers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 336 cloud infrastructure support providers based in Spain

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Cloud infrastructure support providers based in Spain at a glance

As of Aug 31, 2026

19.3%Verified-email coverage

1.3%Mobile-number coverage

13.4Average contacts per company

1-10Median size (employees)

19.0%Largest-city concentration · Madrid

Aug 31, 2026Page data refreshed

Companies by employee count

1-10

198

11-50

100

51-200

201-500

501-1,000

1,001-5,000

10001+

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 cloud infrastructure support providers, 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 Spain whose own description of what they do matches “cloud infrastructure support providers”. 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 cloud infrastructure support providers), 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 cloud infrastructure support providers, and records with no verified work email. Companies headquartered outside Spain 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, 871 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 August 31, 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.

Cloud infrastructure support providers by metro

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 cloud infrastructure support providers, 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 cloud infrastructure support providers are there based in Spain?

RevenueBase identified 336 cloud infrastructure support providers headquartered in Spain as of August 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?

SIRT, headquartered in Zaragoza, tops this list with the largest team on record.

Which city has the most cloud infrastructure support providers?

Madrid leads with 64 headquartered companies, followed by Barcelona (47) and Valencia (10).

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 871 verified decision-maker contacts tracked across these 336 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on August 31, 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.