A domain controller is a server that controls users and computers on a network. The main task of a DC is to authenticate users logging onto the network.

• Centralized location for users and computers
• Intranet Hosting
• Shared computer resources
• Manage network printers
• Central management and control of security for all computers
• Lockout of user accounts after a set number of logon attempts
• Users can logon to any computer on the network with current settings
• Set all computers to lock after a set amount of idle time and requiring a password to unlock
• Ability to disable accounts quickly
• One or more computers are servers
• Unlimited number of computers

A workgroup is a peer to peer where authentication is done on each computer.

• Computers have a set of user accounts
• A minimum amount of computers
• Printers can be shared whithin workgroup
• Shared resources
• Users need to have an account on every computer they access