An entity attribute is a SAML attribute associated with a SAML entity (an identity provider or a service provider) in metadata. For example, an entity ID is a distinguished entity attribute associated with every SAML entity in metadata.
In this case, the name of the attribute is
and its value is
. Like all SAML attributes, an entity attribute may be single-valued or multi-valued. (As it turns out, the above entity attribute is multi-valued.)
Entity attributes turn out to be are extremely useful. Operationally, entity attributes are used in policy configurations in lieu of entity IDs. The advantages of doing so are overwhelmingly positive.