VDI GmbH is the management holding company of the VDI Group, responsible for holding and controlling participations in its various subsidiaries, including VDI Wissensforum IWB GmbH, VDI-Verlag GmbH, and VDI Technologiezentrum GmbH. It also manages real estate and acts as an internal service provider for the entire VDI Group, offering expertise in areas such as Finance, HR, IT, and organizational development. The company's purpose is to contribute to the sustainable and profitable development of the VDI Group.