In Microsoft Active Directory a Group Policy is a policy applied to many AD objects. Objects can be user accounts, servers, desktop devices, etc. Group Policies are used to manage things like user account permissions. For example, a policy may be created for each team with default account permissions needed for those users.
Group Policy is a feature of the Microsoft Windows NT family of operating systems (including Windows 7, Windows 81, Windows 10, and Windows Server 2003+) that controls the working environment of user accounts and computer accounts Group Policy provides centralized management and configuration of operating systems, applications, and users' settings in an Active Directory environment A set of Group Policy configurations is called a Group Policy Object (GPO) A version of Group Policy called Local Group Policy (LGPO or LocalGPO) allows Group Policy Object management without Active Directory on standalone computersActive Directory servers disseminate group policies by listing them in their LDAP directory under objects of class groupPolicyContainer