An Overview of Multi-cloud Computing

The purpose of this paper is to provide a brief overview of cloud computing technologies, particularly with respect to multi-cloud networks. First, the basics of cloud computing concepts are discussed. Next we outline some challenges facing cloud computing, and discuss how multi-cloud systems including multi-clouds, hybrid clouds, federated clouds, and cross-clouds may be used to deal with some of these issues. Finally, multi-cloud systems may also be used in conjunction with new developing technologies such as Big Data and Machine Learning, leading to exciting innovations. These are reviewed in brief. Our goal is to provide a modern look at the state of the art in multi-cloud computing and review open issues in the field. The goal is that this paper will help the reader to understand challenges facing cloud computing, how multi-cloud computing addresses some of these issues, and inspire community excitement at the future integration of multi-cloud platforms with other novel technologies.

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