A Review on Edge Computing

In recent years, with the proliferation of the internet of Things (IoT) and the wide penetration of wireless networks, the quantity of edge devices and the knowledge generated from the edge are growing quickly. According to International Data Corporation (IDC) prediction [1], global information can reach one hundred eighty Zetta-bytes (ZB), and 70th of the data generated by IoT will be processed on the edge of the network by 2025. IDC also forecasts that more than 150 billion devices are going to be connected worldwide by 2025. During this case, the centralized processing mode supported cloud computing is not economical enough to handle the data generated by the edge. The centralized processing model uploads all information to the cloud data center through the network and leverages its supercomputing power to solve the computing and storage problems, that allows the cloud services to make economic advantages. This paper provides state-of-threat coverage of edge computing topics and highlights the present challenges and future opportunities in this area.