Company lists · Data refreshed September 2026
Top 25 Infrastructure outsourcing companies based in France
RevenueBase identified 548 infrastructure outsourcing companies headquartered in France as of September 2026 and tracks 10,245 professional contacts across them, including 2,784 with verified work emails. Paris is the largest hub.
This list covers infrastructure outsourcing companies headquartered in France, 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.
The 25 largest infrastructure outsourcing companies based in France
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,519 contacts → | ||||
Indirect evidence “Société d'infogérance” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 2 | 551 contacts → | ||||
Indirect evidence “Fondée en 1985, Tenexa est une Entreprise de services du numérique (ESN), Le groupe Tenexa est composé de deux filiales (Infodis IT, & Prolival) et se positionne résolument vers…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 3 | 532 contacts → | ||||
Indirect evidence “Filiale du Groupe SYNERGIE, DCS SYNERGIE GROUP capitalise sur son histoire pour accompagner chaque jour les enjeux IT de ses clients.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 4 | 355 contacts → | ||||
Indirect evidence “Forte de compétences consolidées autour d'un réseau de partenaires fidélisés depuis plus de 15 ans, HexaWare vous accompagne dans l'évolution permanente de votre système…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 5 | 342 contacts → | ||||
Indirect evidence “For over 20 years, ITS Group has supported companies in their digital transformation projects thanks to the strength of its specialized areas of expertise.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 6 | 282 contacts → | ||||
Partial evidence “Jiliti is a leading European IT infrastructure management company with over 40 years of expertise.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 7 | 224 contacts → | ||||
Partial evidence “Cegedim Outsourcing, business unit Cegedim, est spécialisée dans deux domaines d'activité : IT et BPO.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 8 | 197 contacts → | ||||
Indirect evidence “We are a true product of innovation.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 9 | 143 contacts → | ||||
Partial evidence “Expertise en infrastructure.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 10 | 139 contacts → | ||||
Indirect evidence “DHS - 50 Ans d'Excellence Informatique Depuis 1973, DHS se distingue comme un leader dans le domaine informatique, combinant une riche histoire de 50 ans d'expertise et une vision…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 11 | 136 contacts → | ||||
Indirect evidence “LE DIGITAL PAR EXPERIENCE] Ntico, entreprise de services numérique est une communauté de talents, présente à Lille, Massy, Orléans et Montpellier, partageant des valeurs…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 12 | 115 contacts → | ||||
Indirect evidence “Mais qui sommes-nous?” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 13 | 109 contacts → | ||||
Partial evidence “AVA6 est une ESN dont les domaines de compétences sont l'infrastructure, systèmes et réseaux, hébergement.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 14 | 100 contacts → | ||||
Indirect evidence “SYS1 est présent à Bordeaux en Nouvelle Aquitaine ainsi qu'en Occitanie et PACA avec son agence de Montpellier pour adresser les sujets ci dessous : ACTIVITÉS PRINCIPALES Étude…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 15 | 97 contacts → | ||||
Indirect evidence “We at HTS provide the modern day IT and network solutions to the enterprise markets through an extensive range of managed IT support services to its worldwide clientele.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 16 | 83 contacts → | ||||
Indirect evidence “Allez, on se présente!” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 17 | 75 contacts → | ||||
Indirect evidence “Magic OnLine is one of the pioneers of Internet Business in France.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 18 | 69 contacts → | ||||
Partial evidence “Attineos Infrastructures est une jeune ESN, spécialisée dans les Systèmes & Réseaux informatiques.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 19 | 63 contacts → | ||||
Partial evidence “Créée en 1986, AID Computers est un opérateur global de solutions d’infrastructures et de services informatiques et télécoms, pour les entreprises.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 20 | 59 contacts → | ||||
Indirect evidence “Les experts de la production informatique ADELIUS est une société de services et de prestations intellectuelles.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 21 | 57 contacts → | ||||
Partial evidence “Le Groupe Osmozium est une entreprise de services du numérique (ESN) spécialisée dans le management des infrastructures IT hétérogènes, experte en solutions d’infogérance…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 22 | 56 contacts → | ||||
Indirect evidence “Bienvenue chez Access Group, pôle d'expertises numériques d'Eiffage Energie Systèmes en région Auvergne Rhône-Alpes.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 23 | 53 contacts → | ||||
Indirect evidence “Spécialiste depuis de l’hébergement et de l’infogérance, Iguane Solutions affiche quelques belles références clients : Dailymotion, Deezer, Dassault Systèmes, Virgin Mega…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 24 | 53 contacts → | ||||
Indirect evidence “Partenaire de votre service informatique.” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
| 25 | 49 contacts → | ||||
Partial evidence “Elit-Technologies is a Cloud and Managed Services provider which defines, integrates and operates, on site or Cloud-based infrastructures and solutions around: • Digital WorkPlace…” Source: RevenueBase Database · checked Sep 28, 2026Thanks. The Data Team will review it. | |||||
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: infrastructure outsourcing companies. 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 infrastructure outsourcing companies.
- Partial evidence
- Its own public description names part of infrastructure outsourcing companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name infrastructure outsourcing companies. 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 548 infrastructure outsourcing companies based in France
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Infrastructure outsourcing companies based in France at a glance
As of Sep 28, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for France, so it is reported there. Company counts and contact totals on this page are exact for France, over 548 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 infrastructure outsourcing companies, 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 France whose own description of what they do matches “infrastructure outsourcing companies”. 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 infrastructure outsourcing companies), 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 infrastructure outsourcing companies, and records with no verified work email. Companies headquartered outside France 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, 2,784 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.
Infrastructure outsourcing companies 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 infrastructure outsourcing companies, 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 infrastructure outsourcing companies are there based in France?
RevenueBase identified 548 infrastructure outsourcing companies headquartered in France 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?
CMS, headquartered in France, tops this list with the largest team on record.
Which city has the most infrastructure outsourcing companies?
Paris leads with 75 headquartered companies, followed by Boulogne-Billancourt (9) and Lyon (9).
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 2,784 verified decision-maker contacts tracked across these 548 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.
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