The HomeGroup feature in Windows 7 is essentially a peer-to-peer workgroup/network that has been redesigned to make it simpler for home users to set up a home network. While this is essentially true, there is more to a Windows 7’s HomeGroup feature than meets the eye.
Even though a HomeGroup works like a standard peer-to-peer workgroup, behind the scenes it does in fact share some of the networking functionality of a domain. For example, the computers in a HomeGroup have an inherent machine trust and there are consistent user identities throughout the network. As such, the Windows 7 HomeGroup feature is ideal for a small- to medium-sized business network — despite the name. Read more.