What is access management?
As the two words that make up the ''AM'' of IAM, access management represents one of the core functions of IAM as an enabling technology. Access management covers two things, the first of which is the validation that a request comes from a legitimate source. To frame that in AWS IAM terms, it means that it can provide the shared secrets affiliated with their IAM user account to prove the request is valid. This is the authentication side of access management; we dealt with how to authenticate AWS IAM user accounts in depth in Chapter 3, IAM User Management.
The second function of access management is to make sure that the request itself is authorized. This is to say that there is nothing about the request, such as the target of the action, or the location of the object or requestor, or anything else that runs afoul of the rules that apply to that specific request and requestor, which then determine what they should and should not be...
