Abstract: Cloud computing is a new emerging technology with large number of resources (virtual machines) which are handled dynamically over the internet. Now a days cloud computing is used widely and there is a need for achieving better performance, optimization, reduction of migration time, efficient computing and better resource utilization. So, resource allocation using virtual machines plays a vital role in cloud environment. In this paper we propose various sets of resource allocation process such as skewness algorithms and their importance in cloud computing.