A my current client we have a rather elaborate domain setup and I think it might be better to set up a trust relationship so the client domain is able to reference users and resources on the vendor domain. This will make administration of users much easier as well as making server administration much easier for the vendor.
So my question is... Is it? Easier, I mean. Is it easier to set up a trust relationship between two domains compared to managing, say 50, user accounts in 2 places?