This assignment delves into the critical role of information technology (IT) systems within organizations, focusing specifically on Tesco PLC, a major player in the retail industry. It examines current manual systems utilized by Tesco and proposes the integration of advanced IT solutions such as Enterprise Resource Planning (ERP), online billing, Groupware & KM 2.0, Decision Support Systems (DSS), and Document Management Systems (DMS). The aim is to highlight how these IT systems can enhance Tesco's operations, performance, and sustainability.