The annual “IT consulting and system integration” ranking published by analysis firm Lünendonk lists companies that generate more than 60 % of their sales revenues from management and IT consulting, system integration, and software development and roll-out in Germany. In this segment, adesso is the top German IT service provider, coming behind Accenture, Capgemini and IBM.

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Dortmund |
Largest IT service provider in Germany: adesso overtakes German competitors in the 2025 Lünendonk list
For the first time, adesso SE is the highest-ranked IT service provider from Germany in the latest Lünendonk list for ‘IT Consulting and System Integration’ 2025. This underlines the strong growth momentum and resilience of the Dortmund-based company in a challenging economic environment. Thanks to sales growth of 15 %, which was well above the average figure of 3.4 % for the 25 largest IT consulting and system integration companies in the list, adesso rose from sixth place in 2024 to fourth place in the ranking. With domestic sales of EUR 1.07 billion, adesso has a clear lead over German competitors such as msg (EUR 968.1 million) and Materna (EUR 580 million), and is well ahead of them in the most important German provider ranking for IT service providers.
“The top position among German IT service providers in the current Lünendonk list is a major milestone for us. It confirms that, with our long-term strategy for organic growth, we are on the right track to become one of the leading IT consultancies for industry-specific business processes in Europe,” says Mark Lohweber, CEO of adesso SE. “The fact that we improved once again in a year marked by cautious investment is testament to our customer relationships, the innovative strength of our teams and our focus on pioneering technologies.”

Mark Lohweber is CEO of adesso SE. (Source: adesso)
The company still plans to make targeted investments in artificial intelligence and GenAI, consulting and services in the SAP environment, managed services and the expansion of industry-specific IT solutions. adesso SE is also continuing to promote talent and develop new technology and innovation partnerships.
“We are keen both to set technological standards and to provide strategic impetus for the digitalization of our customers. We are also looking beyond Germany’s borders in order to help shape Europe’s sovereign IT transformation,” adds Lohweber.
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Communications Manager Nils Roos +491704406148 nils.roos@adesso.de