Detecon

Detecon International GmbH is a German management and technology consulting company headquartered in Cologne. Established in 1977, it is part of the Deutsche Telekom Group and advises corporate and public sector organizations on digital transformation, IT and technology strategy, and telecommunications.Detecon also serves as a consulting partner for the Advisory Services division of Telekom subsidiary T-Systems International GmbH^[1].

The company was founded in 1977 under the name Deutsche Telepost Consulting as an affiliated entity of Deutsche Bundespost in Bonn, with a focus on providing consulting services to the international telecommunications industry.

Its current structure dates back to 1 August 2002, when a merger with Diebold Deutschland GmbH created the present-day Detecon International GmbH. Diebold itself had been founded in 1954 by John Diebold in New York City and established a presence in Germany in 1959. Ownership of Diebold Deutschland later transferred to debis Systemhaus GmbH, a subsidiary of Daimler-Benz AG, in 1991.

Following Deutsche Telekom’s acquisition of debis Systemhaus in 2002 and its integration into T-Systems, Diebold was subsequently merged with Detecon as part of a broader corporate restructuring.

Detecon provides management and technology consulting services. Its areas of work include IT and digital strategy, cloud transformation, network transformation, cybersecurity, artificial intelligence, data management, and process digitalization.

The company supports clients in the design and implementation of digital infrastructure and technology-driven business solutions across a range of industries, including telecommunications, transport and logistics, manufacturing, and the public sector.

Detecon operates 18 offices worldwide across Europe, the Middle East, Asia, and Africa, including in Germany, Austria, Sweden, Switzerland, China, Thailand, the United Arab Emirates, and the United States. The company has been involved in consulting projects in more than 130 countries.

Detecon has been included in a number of industry studies and rankings conducted by independent organizations, including Handelsblatt, Lünendonk & Hossenfelder, the Austrian Industriemagazin, and Markt und Mittelstand.

• 2026: brand eins – The Best Management Consultants of 2026 (Technology & Telecommunications)^[2]
• 2025: Lünendonk List – ranked among the leading management consulting firms in Germany^[3][4]
• 2025: Industriemagazin – Management Consulting Ranking (1st place in Transport and Logistics; 2nd place in IT Strategy and Implementation; 3rd place in Digitalisation)^[5]
• 2024–2025: Industriemagazin – rankings in IT Strategy and Digitalisation^[6]
• 2024: Markt und Mittelstand – “Germany’s Best Consultants” (IT Consulting)^[7]
• 2024: Handelsblatt – “Best Consultants” (Technology, Media and Telecommunications)^[8]

• http://www.detecon.com