Enterprise metadata MANAGEMENT (EMM) is a set of features INTRODUCED in Microsoft SharePoint Server 2010 that enable taxonomists, librarians, and ADMINISTRATORS to CREATE and manage terms and sets of terms across the enterprise.

The managed metadata service: is a service application that enables the USE of managed metadata and allows you to share content types across site collections and across Web applications. The service publishes a term store and content types, and the metadata is consumed via the managed metadata connection. A managed metadata service and connection are created when the metadata service application is created.

Enterprise metadata management (EMM) is a set of features introduced in Microsoft SharePoint Server 2010 that enable taxonomists, librarians, and administrators to create and manage terms and sets of terms across the enterprise.

The managed metadata service: is a service application that enables the use of managed metadata and allows you to share content types across site collections and across Web applications. The service publishes a term store and content types, and the metadata is consumed via the managed metadata connection. A managed metadata service and connection are created when the metadata service application is created.