In this paper, we present the concept of a diversified SCM (supply chain management) standard and distributed hub architecture which were used in B2B experiments for the Japanese retail industry. The conventional concept of B2B standards develops a single ideal set of business transactions to be supported. In contrast, our concept allows a wide range of diverse business transaction patterns necessary for industry supply chains. An industry develops a standard SCM model that partitions the whole supply chain into several transaction segments, each of which provides alternative business transaction patterns. For B2B collaboration, companies must agree on a collaboration configuration, which chooses the transaction alternatives from each segment. To support the development of a B2B system that executes an agreed collaboration, we introduce an SOA (service oriented architecture) based pattern called a distributed hub architecture. As a hub of B2B collaboration, it includes a complete set ...