Before we go too far on the path to understand what its management is about, let us define what identity is.
What is Identity? ( I am not Dave, that is just my Name )
Incase you read the link that I provided in Part I , you have the basic idea about how identity has been defined so far as an abstract concept. In order to map this to more real-world scenario I have interpreted the three tier system in the digital world as follows
Core Identity : This is the digital representation of an entity in the domain. This needs to be unique in the particular domain and can be a UUID, email-id, employee id, or something that uniquely identifies the user in the domain.
"Action" Identity : This defines the identities that the core identity uses to perform its work. So for example the core user can use unix root id or a NYSE trader role. These identities are representation of the core identity in specific resource(s). Typically these identities are used by the resource manage