Edge computing is the evolution of cloud computing. It limits the amount of data that needs to be pushed up to the cloud for processing & transforming how the data is handled and processed. The exponential growth of mobile and IoT applications is setting up the stage for a massive shift in edge computing which is backed by high performance and low latency processors.
In simple, edge computing allows data from IoT to be analysed at the edge of the network before being sent to a data centre or cloud.
Following is an interesting article about how autonomous vehicle rely on edge computing and not the cloud.