Klaus-Jürgen Werner

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.

mcn tele.com AG operates as a holding company with interest in providing telecommunications services. It provides telecommunications and Internet services. The company operates long and short distance land line telephone networks and directories, connections, and interconnections services. mcn tele.com was founded in 1999 and is headquartered in Bad Homburg, Germany.

T-Systems ITS GmbH provides information and communications technology (ICT). Within the Deutsche Telekom group, T-Systems brand symbolizes the strategic business area “Business customers”: this comprises some 60 multinational groups and large public authorities, as well as 160,000 large and medium-sized companies. Founded in 2001, the company is headquartered in Frankfurt am Main, Germany.