Windows server 2008 functional-level ad ds forest

As an IT Administrator, you have been tasked with designing the technical strategy for the merger of your company with another company. Develop a list of questions that you will need answered to effectively design a solution for allowing seamless sharing of information resources between the two companies. Your company has a single, Windows Server 2008 Functional-Level AD DS Forest. The new company has a directory service but that is all the information you have been given thus far. Consider trust relationships, compatibility with other directory services (previous versions of Windows, other operating systems, etc).