Explain the purpose of a VPN and describe, in broad terms, how a VPN works. Define the term virtual and explain how it relates to VPN. Define private cloud. Summarize why the benefits of a private cloud are questionable. What kind of organization might benefit from such a cloud? Explain why it is unlikely that even very large organizations can create private clouds that compete with public cloud utilities. Under what circumstance might a private cloud make sense for an organization?

Define VPC and explain how and why an organization might use one.