*4.7.1 Filtering*

Edge devices produce huge amounts of data in real time, and the fog nodes filter all this data. Some filtered data are sent to the cloud for further processing or storage. The edge device that directly receives the data from the IoT devices must be able to determine noise in the data and perform some level of processing and analysis that will support the IoT's immediate need before offloading it to the cloud. This enables real-time analysis of data by the fog. It also saves the bandwidth wasted in offloading useless data to the cloud. The filtering capability of the FC allows faster data analysis and decision-making at the edge.
