Answer:
Active Directory (AD)
Step-by-step explanation:
Active Directory is the service integrated into the Windows server operating system that manages a centralized database containing user account and security information. In other words, it is a primary feature in Windows OS that manages and controls access to networked resources.
Some of it's other functions are:
i. Authentication and authorization of infrastructure resources such as users and devices.
ii. Storage of the information of infrastructure resources such as password.