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This article presents a detailed description of fog computing (also known as edge computing) and explores its research challenges and problems. Based on the authors' understanding of these challenges and problems, they propose a flexible software architecture, which can incorporate different design choices and user-specified polices. They present their design of WM-FOG, a computing framework for fog environments that embraces this software architecture, and evaluate their prototype system.
Hao et al. (Wed,) studied this question.