The purpose of this study is to gain exhaustive and very up-to-date information about the ICT sector in the EU. The information will be used in the European Information Society Reports in the i2010 context, which will include, among others, a description and analysis of the development of the sector and of the efforts in the field of R&D. The results will also provide material for the assessments of the state and competitiveness of the ICT sector for Commission services. It is essential for the Commission to be provided with detailed data.