Internet commerce has, in recent years, been promoted as the essential way of doing business. The Internet (using www technology) is however primarily a retail medium. Organisations that establish successful Internet selling operations will need effective backroom systems and slick logistics on the supply side of their operations. In many cases these logistics will also be co-ordinated using electronic commerce (EC); not the technologies spawned from the popularisation of the Internet but the rather older technologies of Electronic Markets (EM) and Electronic Data Interchange (EDI). It is argued that that the merging of Internet EC with EMs and, in particular, with EDI gives new opportunities for Competitive Advantage.