Security Group:A collection of user accounts or computer accounts that can be collectively assigned access permissions.
Distribution Group:An email group that forwards received messages to all member addresses.
Folder Permission Group:A set of users granted specific access rights to a particular folder in a file system.
Email Distribution Group:A group used for sending emails to multiple recipients through a single address.
Shared Mailbox Group:An email account accessible by multiple users for sending, receiving, and managing emails from a common address.