  As billions of devices get connected to the Internet, it will not be
sustainable to use the cloud as a centralised server. The way forward is to
decentralise computations away from the cloud towards the edge of the network
closer to the user. This reduces the latency of communication between a user
device and the cloud, and is the premise of 'fog computing' defined in this
paper. The aim of this paper is to highlight the feasibility and the benefits
in improving the Quality-of-Service and Experience by using fog computing. For
an online game use-case, we found that the average response time for a user is
improved by 20% when using the edge of the network in comparison to using a
cloud-only model. It was also observed that the volume of traffic between the
edge and the cloud server is reduced by over 90% for the use-case. The
preliminary results highlight the potential of fog computing in achieving a
sustainable computing model and highlights the benefits of integrating the edge
of the network into the computing ecosystem.
