Please follow the Three question.

1-Compare between different formal Cloud definition? Based on stale and standards? (include the NIST definitions)

Hint: SP 800-145 September 2011 The NIST Definition of Cloud Computing

2-write briefly on Cloud Computing Recommendations suggested by NIST .

Hint: SP 800-146 May 2012 Cloud Computing Synopsis and Recommendations

3-What are the Key Security and Privacy Issues?

Hints: SP 800-144 December 2011 Guidelines on Security and Privacy in Public Cloud Computing