What is centralized management

Central management: A central service that provides instructions to all of the different parts of my IT infrastructure

Directory services provides centralized authentication, ​authorization, and accounting, also known as AAA (authentication, authorization, accounting): The services that the directory services provide to all the computers within a company or organization

• When computers and applications are configured to use directory services for ​AAA services, decisions about granting or denying access to computers, ​file systems, and other IT resources are now centralized.

 ​If you or another person change roles in the company, ​then all you have to do is change the groups that you’re part of, ​not the rights that you have to directly access resources. ​We call this Role-based access control (RBAC): The process of changing a persons group that they are a part of when they have changed roles within a company to limit or change their access to resources