I would like to setup a Sharepoint 2010 solution on a cloud based Windows Server 2008 R2. Preferably I would like the ability to use a company's existing user accounts and passwords. Therefore my question is..
Is it possible to either:
Have the cloud solution join the domain controller of an existing network on a remote site with reasonable efficiency?
OR at a minimum I would like some way to synchronise user accounts and passwords - is there another solution to achieve this?