This paper presents the results of a preliminary study into the antecedents for B2B e-marketplace success. A confirmed model of e-business transformation was used to examine the participation of a large global buyer organisation and develop detailed case study analyses. The study confirmed the validity of the e-business change model but further identified those factors which were fundamental to successful B2B e-marketplace implementation. This provided the basis to understand the specific dependencies within the model and the performance indicators for success.