Provision of services in the fields of construction, finance, marketing, organizational, corporate and real estate consulting; trade in and brokerage of goods and services in the aforementioned fields; offering of training and consulting services, in particular organization and implementation of courses and lectures as well as creation of books, expert reports and information sheets; holdings; acquisition, encumbrance, sale and management of real estate; financing and provision of guarantees and sureties for subsidiaries and third parties.