AD Groups created with CRM 2011 installation

With CRM installation below Active Directory (AD) Groups get created in the Organization Unit (OU) you chosen.

Below is the description of 4 AD Groups

AD Name	Description
SQLAccessGroup	The members of this group get access to CRM filtered views
PrivUserGroup	CRM user group for special administrative functions; Including CRMAppPool identity (domain user or NetworkService). The users who configure CRM must be added to this group.
PrivReportingGroup	This group create during CRM Server Setup and configured during CRM Reporting Extensions Setup.
ReportingGroup	All CRM users are included in this group.This group is updated automatically as users are added and removed from CRM. By default, all CRM Reporting Services reports grant Browse permission to this group.

These groups specific to the Organization. So a new set of groups get created when you create a new Organization.

If you have multiple Organizations each group will be suffixed by Organization GUID.

Rajeev Pentyala – Technical Blog on Power Platform, Azure and AI