The JMX API and WebLogic's JMX extensions provide a powerful platform with which to manage and monitor resources. Together they provide the system administrator a configurable set of tools for managing and monitoring of resources in a WebLogic domain. We've seen how to create our own MBeans and access WebLogic MBeans, and manage them through an interface or programmatically through the API. We've also seen how to make our MBeans communicate with us through the notification model. Although JMX is a relatively new API, it will become a powerful tool that you'll undoubtedly turn to more and more to better manage your environment.