Joachim A. Langmack

Drawing on a global infrastructure of data centers and networks, T-Systems operates information and communication technology (ICT) systems for multinational corporations and public sector institutions. On this basis, the company provides integrated solutions for the networked future of business and society. T-Systems combines industry expertise and ICT innovations to add significant value to customers' core business all over the world.

CITAG Consulting Innovation & Technology AG provides e-business and business process consulting and IT reengineering services. The company is based in Hamburg, Germany. The German company was founded by Joachim A. Langmack. CITAG Consulting Innovation & Technology was acquired by Systematics AG on January 03, 2001.

IBM Deutschland GmbH provides information technology, business consulting, Cloud, and software solutions. It also offers IT infrastructures including software and hardware, as well as its financing. Its services include consultation on project deliverables, as well as creation, transformation, and operation of IT infrastructures, applications, and business processes. The company was founded in 1910 and is based in Ehningen, Germany.