Date Added: Sep 2011
Cloud computing is a profound revolution in the way it offers the computation capability. The Information Technology organizations do not need to oversize their infrastructure anymore, potentially reducing the cost of deploying their services. The main objective now is to reduce the cost of deploying a service in the cloud. Some research attempts have focus on deploying one service in multiple clouds, to benefit from different billing models. In this paper, the authors propose a way to minimize that cost by using a single cloud provider with an optimal mixture of reserved and on-demand instances to take advantage of different billing models within the same provider.