Workgroups
Windows Workgroups, by contrast, is the other model for grouping computers running Windows in a networking environment which ships with Windows. Workgroup computers are considered to be 'standalone' - i.e. there is no formal membership or authentication process formed by the workgroup. A workgroup does not have servers and clients, and hence represents the Peer-to-Peer (or Client-to-Client) networking paradigm, rather than the centralized architecture constituted by Server-Client. Workgroups are considered difficult to manage beyond a dozen clients, and lack single sign on, scalability, resilience/disaster recovery functionality, and many security features. Windows Workgroups are more suitable for small or home-office networks.
Read more about this topic: Windows Domain