Electronic exchanges represent the most important model of B2B (businessto- business) electronic business. B2B electronic business is collaboration which is established between organizations (private or public, profit or nonprofit organizations) by internet. The collaboration can be achieved between an organization and its partners in the same supply chain or between various organizations regardless of some supply chain. The basic characteristic of B2B electronic business is that organizations try to automatize trade process in order to improve it. In automatization of the process, electronic markets (e-markets) and electronic exchanges as a special form of the markets have specific role. Subject of research in this paper is characteristics, components and classification of electronic exchanges, critical success factors and criteria for evaluation of the exchanges as well.