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Comment: DOCUMENTATION-6853

Many organizations expose their business capabilities through APIs. One of the key challenges is controlling access to these exposed APIs in such a way that all authorized users are able to access its APIs without any interruption, while at the same time making sure that any unauthorized users are kept out. In order to achieve this, parameters such as the user role can be used in determining whether to grant or deny access to an API for a given user. There are two ways to control access to users. 1. OAuth 2.0 scope is one way of controlling access to usersand 2. XACML. This section explains how an external eXtensible Access Control Markup Language (XACML) entitlement server can be integrated with WSO2 API Manager to provide role-based access control to APIs exposed via WSO2 API Manager. XACML is a declarative access control policy language based on XML that can provide a standardized way of validating authorization requests.

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