Date Added: Mar 2012
Cloud computing has generated a lot of interest and competition in the industry and it is recognize as one of the top 10 technologies of 2010. It is an internet based service delivery model which provides internet based services, computing and storage for users in all market including financial, health care & government. In this paper, the authors did systematic review on different types of clouds and the security challenges that should be solved. Cloud security is becoming a key differentiator and competitive edge between cloud providers. This paper discusses the security issues arising in different type of clouds.