The Authorization Server is hosted in a 
Image Added Service Context (SC). It is used for generating access tokens that are required for accessing REST APIs hosted by the REST Server agent when the OAuth 2.0 Authentication feature is enabled in the REST Server agent. Client applications that wish to obtain access token from the Authorization Server must be registered first using the Authorization Server's Management API. Please refer to Section Management API for information on the registration process. For more information on the REST Server agent, see REST Server Agent
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REST Server and Authorization Server architecture
