XACML is an XML-based language for access control that has been standardized by the Technical Committee of the OASIS consortium. XACML is very popular as a fine grained authorization method among the community. HoweverFine-grained authorization specifies the requirements and variables in an access control policy that is used to authorize access to a resource. However, there are plenty of other aspects of XACML other than it being just a fine grained authorization mechanism.
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