International Journal of Computer Applications
Cloud computing provides information technology resources and services on demand using the internet. It different types of services like IAAS (Infrastructure-As-A-Service), PAAS (Platform-As-A-Service) and SAAS (Software-As-A-Service). Scenario of cloud computing refers to the two entities mainly cloud service provider and cloud service user. Cloud service provider provides the cloud resources and services to the cloud service user. Cloud service provider must have to use its resources efficiently to gain profit, but challenging task for them is maximum optimization of cloud resources.