Production, publication and trade of books, magazines, sound recordings and other media, in particular various internet services such as online bookshop and mail-order bookshop, provision of services and conceptual consulting in the fields of advertising, marketing, graphics and communication, in particular development and implementation of online and print media, provision of services in the field of computer science, in particular hosting and server housing; can participate in other companies, acquire, manage and sell patents, licenses as well as real estate and securities.