Don’t we all have some sort of document on the cloud? To think that data and information could be stored in a reality perceived as light and immaterial as the famous cloud has caused in recent years an abuse of the instrument, a flooding of internet communications, an exponential growth in the consumption of broadband and a consequent inability of telephone operators to adapt the service to consumers’ needs. Fog computing is now trying to solve the problem. From the English ‘fog’, this solution creates a dimension that is parallel to the cloud. Just like fog, which is interposed in a sort of intermediate layer between the sky and the ground, fog computing facilitates access to documents stored in the network via the creation of a sort of peer to peer that bypasses the network. Information is thus no longer stored in mega distribution servers, rather it is scattered across a number of “proximity” devices that facilitate the distribution of content even in the absence of connection in a part of the network, and improve its efficiency.
Given its conformation and structure, fog computing is considered very suitable for the internet of things, unlike the cloud. Its more extended distribution/dislocation approach is useful for industrial processes, especially for the large amount of data that would be costly to send to the cloud for processing and analysis. Fog computing reduces the bandwidth needed and reduces the back-and-forth communication between sensors and the cloud, which can negatively affect IoT performance.
Hardware manufacturers, such as Cisco, Dell and Intel, are working to create IoT gateways and routers that support fogging. In any case, fog computing complements and does not replace cloud computing. The first allows for information analyses and processing in the short period, while the second in the long period.