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Identity governance is the policy-based centralized orchestration of user identity management and access control
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Identity governance products differ from identity and access management systems by enabling organizations to define, enforce, review and audit IAM policy, but also map IAM functions to compliance requirements and in turn audit user access to support compliance reporting.
Source: What is identity governance? - Definition from WhatIs.com (techtarget.com)
Identity Analytics is basically a data warehouse discipline.
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