EM2I'07 is a new venue for presenting state-of-the-art research and development achievements in the design, introduction, and use of integration technology for electronic marketplaces that affect business interoperability between firms and within supply chains. Although traditional forms of e-marketplaces such as intermediaries, supplier portals, and content hubs are an important area of focus, integration technology is increasingly supporting a much wider range of business interoperability that enables contextually heterogeneous enterprises to semantically work together beyond operational transactions. As more and more firms in all regions of the globe are able to interact online, we are rapidly moving toward an integrated global e-marketplace consisting of loosely coupled vertical, horizontal, and regional e-marketplaces. © 2008 International Federation for Information Processing.