International Journal of Computer Science and Mobile Computing (IJCSMC)
Cloud computing is current trend in market. It allows resources to be leveraged on per-use basis. It reduces cost and complexity of service providers by means of capital and operational costs. It allows users to access applications remotely. On behalf of user, this construct directs cloud service provider to handle cost of servers, software updates, etc. For both, cloud providers and consumers; integrity, availability, confidentiality, authenticity and privacy are important concerns. Infrastructure-as-a-Service (IaaS) serves as foundation layer for many other delivery models.