A representative market study was carried out to determine the penetration of electronic business in Swiss companies. A random sample was used in which companies were classified by industry and size, thus allowing a systematic extrapolation. We illustrate the importance of information technology for the electronic business by the numbers of computers in use and the corresponding expenditure on information technologies and compare these with figures for a number of other European countries and the USA. Subsequently, we discuss the use of Internet services and of websites, including objectives and success factors for electronic business as well as potential problems with projects in this field. Finally, we classify companies according to the maturity of their achievements in electronic business.