Edge Computing refers to the computations that take place at the ‘outside Edge’ of the internet, as opposed to Cloud Computing, where computation happens at a central location. Edge Computing typically executes close to the data source, for example onboard or adjacent to a connected camera.
A self-driving car is a perfect example of Edge Computing. In order for cars to drive down any road safely, it must observe the road in real-time and stop if a person walks in front of the car. In such a case, processing visual information and making a decision is done at the Edge, using Edge Computing.
Link: You Need to Move from Cloud Computing to Edge Computing Now!