Utilising the methodology of content analysis, this study uses a multidisciplinary approach to define public eprocurement. Various aspects of e-procurement have been discussed from information systems, supply chain management, electronic commerce/electronic government, and public procurement to come up with an integrated definition of public e-procurement. Following this, e-procurement assimilation has been defined and its impact on procurement efficiency has been evaluated. Following the confirmatory factor analysis in structural equation modelling, dimensional level analysis in ANOVA has been undertaken for the three forms of e-procurement technologies namely e-tendering, ecatalogue management systems, and e-marketplace. The results show the positive and significant impact of the assimilation process on procurement efficiency.