Please respond to three (3) of these questions listed below. They don't need to be too long. Those are class discussion posts. 150 words each is good. Describes the emergence of cloud computing from a combination of business drivers and technology innovations and describe the evolution of definitions associated with cloud computing. List and describe the set of distinct characteristics for an IT environment to be classified as an effective cloud. Explain the difference between OS (software-based) and hardware-based virtualization. Describe logical and physical boundaries within cloud environments, including the organizational boundary (in relation to cloud consumers and cloud providers) and the trust boundary (as it pertains to cloud consumers and cloud providers). Explain also the relationship between organizational boundaries and trust boundaries. Describe basic threat agents relevant to cloud computing.