by XACML (eXtensible Access Control Markup Language) is an XML-based language for access control that has been standardized by the Technical Committee of the OASIS consortium.

XACML describes both an access control policy language, request/response language and reference architecture.

ABAC is an access control paradigm whereby access rights are granted to users through the use of policies that combine attributes together.

An XACML , or element contains a element that specifies the set of requests to which it applies.