This paper reports on research carried out in 1999-2001 on the use of e-business applications in SAPbased organisations. Structured interviews were used to collect data on eleven established organisations from a diverse range of industries. The findings are analysed according to the level of sophistication of e-business models. These early adopters of e-business show a trend towards cost reductions and administrative efficiencies from procurement and self-service applications used by customers and employees A complex case study of e-business integration with a global supplier and its corporate customers is analysed to identify specific antecedents for success. Collectively the set of case studies is used to demonstrate the increased benefits derived from an e-business architecture based on a network of ERP enabled organisations.