Andras Gyenes

Part of Deutsche Telekom AG, GTS Polska Sp Zoo is a Polish company that provides IT security services such as Security Operations Center to ensure the safety of their clients' infrastructure. The company is based in Warsaw, Poland. The company also offers a Virtual Data Center that operates on an Infrastructure as a Service (IaaS) model, providing a flexible and secure IT environment. Additionally, they provide VPN as a Service to enable secure remote access to company data. Piotr Sieluk has been the CEO of the company since 2008.

T-Systems International GmbH engages in the development, implementation, operation, and marketing of client- and industry-specific solutions in the information processing and telecommunications sectors. These include security, data processing, information management, training, and consulting services. The company was founded on August 30, 2004 and is headquartered in Frankfurt, Germany.

GTS Poland Sp zoo provides telecommunications services. The company was founded in 1997 and is headquartered in Warsaw, Poland.

T-Mobile Czech Republic a.s. provides telecommunications services. The company offers mobile telecommunication services, internet, television, mobile phones, tablets, laptops and modems. The company was founded on February 15, 1996 and is headquartered in Prague, Czech Republic.

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.

Founded in 1999, Deutsche Telekom IT GmbH is a German software development company that develops software applications. The company is based in Bonn, Germany and is a subsidiary of Deutsche Telekom AG.

T-Mobile Polska SA engages in the operation of mobile phone networks. It also offers telephones, routers, modems, tablets, and computers. The company provides caller identification, hotspot, high definition voice and Internet services. T-Mobile Polska was founded in 1995 and is headquartered in Warsaw, Poland.

Part of Deutsche Telekom AG, Deutsche Telekom North America, Inc. is a company that wholesales communication equipment. The company is based in Red Bank, NJ.

T-Systems South Africa (Pty) Ltd. provides integrated and secure network, cloud, Salesforce, and SAP solutions. The company is headquartered in Johannesburg, South Africa.