Key features that characterize an enterprise resource planning (ERP) system include integrated modules that manage various business processes such as inventory, finance, human resources, and supply chain. ERPs provide a unified platform for real-time data sharing, enabling improved decision-making and efficiency across departments. They often include automation features that streamline workflows and aid in compliance and reporting. Furthermore, ERP systems enable scalability, allowing organizations to adapt to changing business needs. Customization and support for analytics enhance their effectiveness in optimizing performance and reducing operational costs.