What is a Fog Node A Tutorial on Current Concepts towards a Common Definition

Understand

Fog computing has emerged as a promising technology that can bring the cloud applications closer to the physical IoT devices at the network edge.

• While it is widely known what cloud computing is, and how data centers can build the cloud infrastructure and how applications can make use of this infrastructure, there is no common picture on what fog computing and a fog node, as its main building block, really is.
• One of the first attempts to define a fog node was made by Cisco, qualifying a fog computing system as a mini-cloud, located at the edge of the network and implemented through a variety of edge devices, interconnected by a variety, mostly wireless, communication technologies.
• Thus, a fog node would be the infrastructure implementing the said mini-cloud.