There is no consistent definition of the domain of identity and access management (IAM) Over the years, this inconsistency has led to widespread confusion. The work by Gartner, Forrester Research, the National Institute of Standards and Technology (NIST) and other organizations have helped to clear some fog. The real issue is the lack of consistent understanding about the relationships between the IAM domains, authors say. The Fundamental IAM domain is one of the most important facets of information security.”]
Source: https://securityintelligence.com/clearing-fog-defining-fundamental-iam-domains/