This report provides a comprehensive analysis of information systems and Enterprise Resource Planning (ERP) systems, with a specific focus on their application within Tesco. The study begins by defining information systems and categorizing different types, including transaction processing systems, management information systems, decision support systems, and executive information systems, detailing their functions and examples. The main body of the report then delves into ERP systems, explaining their features, advantages, and implementation within Tesco. The report highlights the benefits of ERP systems in real-life business scenarios, such as increased efficiency, cost reduction, improved decision-making, and effective inventory management. It also provides recommendations for Tesco to further optimize its information systems for enhanced business performance. The report concludes with a summary of the key findings and the importance of information systems in the business environment.