Supply Chain Management (SCM) and Enterprise Resource Planning systems (ERP) are effective ways to achieve competitive advantage and improve organizational performance. This research investigates SCM and ERP systems dimensions and tests their relationships with competitive advantage and organizational performance. A survey is conducted on 216 Tunisian managers. Data are analyzed using principal components analysis and relationships are tested using linear regression. Results show the importance of SCM and ERP systems adoption. It reveals their positive impact on organizational performance and competitive advantage.
