Oracle Enterprise Manager (OEM) is a software management tool that helps businesses to effectively monitor, manage, and maintain their IT infrastructure. It provides a single, central interface for managing all aspects of an organization's IT environment, including servers, databases, applications, middleware, and storage. With OEM, IT administrators can proactively monitor their IT assets, automate routine tasks, and troubleshoot issues quickly and efficiently. It also enables organizations to optimize their IT resources and improve overall system performance, availability, and security.