The present NACE Rev. 2, which is the new revised version of the NACE Rev. 1 and of its minor update NACE Rev. 1.1, is the outcome of a major revision work of the international integrated system of economic classifications which took place between 2000 and 2007. NACE Rev. 2 reflects the technological developments and structural changes of the economy, enabling the modernisation of the Community statistics and contributing, through more comparable and relevant data, to better economic governance at both Community and national level. Development of NACE Rev. 2 has benefited from the work preparing the fourth revision of the United Nations’ International Standard Industrial Classification of All Economic Activities (ISIC Rev. 4). Representatives from Eurostat and Member States of the EU played an important role in this work. NACE Rev. 2 has been created based on ISIC Rev. 4 and adapted to the European circumstances by a working group of experts on statistical classifications from the Member States, candidate Countries as well as EFTA Countries, with the support and guidance of the classification section at Eurostat. Beside the classification, this publication contains also the introductory guidelines containing the main concepts, an historical background and the methodological guidelines for understanding and applying NACE Rev. 2 as well as a detailed description of the different items of the classification.