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The evolutions of world wide web (WWW) promise the revolution in personal, professional, and social aspects of human beings. These evolutions begin with static web pages to more sophisticated brain-computer interfaces. Among them, Web 4.0 plays a significant role that aimed to integrate mobile devices and things into the web to realize smarter environments. Further, it leads to the progression of machine-to-machine communication, wireless sensor networks, cyber physical systems, and internet of things (IoT). The drastic development of IoT applications led to unprecedented growth of data which can be processed using more powerful far-end cloud resources or less powerful local edge devices. Fog computing compromises the demerits of both approaches and conducts the data analysis at the network-end itself. This chapter provides the benefits of fog computing architectures together with the simulator as well as different software platforms for realizing the fog computing.

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