An architecture for elastic resource allocation in Fog Computing

Cloud computing is an amazing technology that uses an internet and central remote server to maintain data in different applications .This technology allows delivery of computing resources over the internet. Cloud offers scalability, availability, elasticity and multitenancy.The most fundamental issue in cloud computing is virtualization .Virtualization is a technique which allows to run multiple virtual machines on a single hardware. In cloud computing, virtualization is used to create a virtual version of a device or resources such as server, storage devices, network or an operating system where the resources are divided into one or more execution environment. Its main motive is to optimize the usage of resources, maximizing throughput, minimizing response time. Beyond this cloud computing has number of limitations. To overcome the limitations of cloud computing there is a new approach as fog computing. In this paper we are submitting here a survey on virtualization methods and its techniques; identifying various issues, possible threats and attacks with virtualization and proposing cloud-fog architecture for elastic resource allocation.