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Any user management system has users, roles, user stores and user permissions as its basic components.
Users
Users are consumers who interact with your organizational applications, databases or any other systems. These users can be a person, a device or another application/program within or outside of the organization's network. Since these users interact with internal systems and access data, the need to define which user is allowed to do what is critical to most security-conscious organizations. This is how the concept of user management developed.
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