Edinburgh Napier University

  One of the key features of cloud computing is on demand resource provision. Unfortunately, different cloud service providers often have different standards, which makes the job of choosing the suitable resource to be a very difficult one for the common users. Then the technology of service broker came out which is designed to choose the appropriate services among different providers to meet the user’s requests. Besides get the final computing results, there are many other conditions often be taken into account, like energy consumption and response time. Maximizing the energy efficiency is not only good for the environment protection but also could benefit the user and provider financially. This paper proposed an energy-aware service brokering strategy, which aimed at finding a suitable tradeoff between energy consumption and user satisfaction. The simulation results have shown that the proposed strategy can effectively reduce the level of energy consumption and meanwhile maintain the user satisfaction at a reasonably good level.