Can Amazon VMs be used as Active Directory domain controllers?
Solution 1:
Yes, but I think that's a pretty bad idea. There are all kinds of problems that you can have when you lose access to a domain controller, so any network interruption will have huge business consequences. You'll have to have some kind of tunnel to secure it, a WAN...
Are there no servers in the building? Not even a file server? You don't need a lot of horsepower to run a small AD domain.
This question deals with the nuts and bolts of making it happen.