Abstract
Cloud computing is an emanating and paradigm technology that provides computing as a utility over the internet. Cloud computing is a collection of highly optimized data centers that provides software, hardware and information resources on a pay-per-use basis. It is becoming the main attraction for business and Information Technology industry as it avoids capital expenditure on additional on-premises infrastructure resources and it scales up or down according to the business requirements. However, cloud computing suffers from certain shortcomings with respect to Internet of things such as requirement of a persistent internet connection, latency, security issue sand migration issues. To overcome some of its drawbacks Fog computing emerged as a nascent platform, which extends cloud computing to the edge of a network. It addresses the snags faced by cloud computing for instance handling of huge data, latency and bandwidth. This paper provides an insight about the paradigm shift from Cloud to Fog computing and discusses various limitations of Cloud and how Fog efficiently overcomes these limitations. It also gives the idea of Fog being the better platform in most of the Internet of Things applications. Apart from that it discusses some of the challenges faced in Fog technique that need to be improved.
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