I have a main office with a domain and seven remote offices with two to 15 computers in each. The remote offices are set up as workgroups and do not have a domain. We currently have a firewall and edge boxes at each location and use a site to site VPN for connection.
I would like to deploy Active Directory from the main office to each remote location. Can I do this with workgroups or do I need to set up a server and create a domain for each location? I'm hoping Active Directory, the site to site VPN and workgroups can all use one AD set up at the main office. Do you recommend any sites that could help with this?