International Journal of Computer Applications
Cloud computing is an emerging technology which helps users to use the resources on the fly and pay as per the usage. In case of resource provisioning there are two ways viz. on-demand subscription and reservation scheme. Although an upfront fee is required for reservation scheme, the reservation scheme is much cheaper than on-demand subscription. But the reservation scheme also suffers from two main issues. If the allocated resources are more than the actual requirement, it leads to over provisioning which causes waste of upfront fee whereas on the other hand if the allocated resources are less than the actual requirement, it leads to under provisioning of resources.