Why and how should the company migrate to 2016 AD? Should the company remain at multi-domain model or migrate to single domain?

Kris Corp

Describe the technical and business reasons for each choice, citing other resources as appropriate. The Windows Server 2016 operating system should be used for all aspects of the solution. Each choice should be explained with technical and business reasoning. Solutions should be reasonably detailed. Your solution should cover the following five numbered areas and associated bulleted items listed under each.

Active Directory
Why and how should the company migrate to 2016 AD?
Should the company remain at multi-domain model or migrate to single domain?
What technology can provide single sign on? How will it be configured?
DNS
Where should DNS servers reside?
What kind of DNS security can the DNS servers leverage?
DHCP
Will a form of DHCP fault tolerance be implemented?
How can DHCP addresses be tracked?
Hyper-V
Evaluate the pros and cons of implanting Hyper-V. Would it need clustering?
What features of Hyper-V can Kris Corporation leverage?
Routing/Security
How can Kris Corporation improve its networking capabilities in terms of file sharing and security?
Submission Requirements:

At least one diagram must be included (not counted toward the minimum length described above). You may include more.