Energy efficiency is increasingly important for future information and communication technologies (ICT), because the increased usage of ICT, together with increasing energy costs and the need to reduce green house gas emissions call for energy-efficient technologies that decrease the overall energy consumption of computation, storage and communication. In my opinion, in the sense of renewable the most important thing is not how to produce energy, but how to save it.
As every company tries to operate according to energy efficiency, cloud computing presents a compelling opportunity to reduce data center power bills, according to a leading expert on IT power issues. Brilliant examples are the cloud companies like Microsoft, Google and Amazon can process the same workload with a lot less power than companies can in their in-house data centers. There is a big gap between the in-house data-centers and cloud platforms.
Cloud computing has power efficiency in four different areas such as diversity, economies of scale, flexibility and enabling structural change. First of all, spreading computing loads across many users and time zones can improve hardware utilization. Secondly, computation is cheaper in a large shop than small one, while the fixed costs can be spread over more servers and users. Thirdly, the management of virtual servers in cloud apps is easier and cheaper than managing physical servers. Finally, the cloud system enables broader efficiencies in a business that can save money over time.
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