![Difference Between Cloud Computing and Fog Computing Difference Between Cloud Computing and Fog Computing](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEj-xkGTz3lw7HXJNIaiUAL5sQcw2Pzt1fJEg06b7pdrwVw-0012o4pctNdy7ZAOREWdc0oDCWNcbUcOKotniu2p6WcsgiTsRE_koouhnjRBGKgqvIudT6r6Pyg2CEvhjatVqEHpWVP3Ebc/w400-h185/Cloud-Computing-vs-Fog-Computing.png)
Difference Between Cloud Computing and Fog Computing
Fog Computing: Fog computing is a decentralized computing
infrastructure or process in which computing resources are located between the
data source and the cloud or any other data center. Fog computing is a paradigm
that provides services to user requests at the edge networks. The devices at
the fog layer usually perform operations related to networking such as routers,
gateways, bridges, and hubs. Researchers envision these devices to be capable
of performing both computational and networking operations, simultaneously.
Although these devices are resource-constrained compared to the cloud servers,
the geological spread and the decentralized nature help in offering reliable
services with coverage over a wide area. Fog computing is the physical location
of the devices, which are much closer to the users than the cloud servers.
Below is a table of differences between Cloud Computing and Fog Computing:
Feature |
Cloud Computing |
Cloud Computing |
Latency |
Cloud computing has high
latency compared to fog computing |
Fog computing has low
latency |
Capacity |
Cloud Computing does
not provide any reduction in data while sending or transforming data |
Fog Computing reduces
the amount of data sent to cloud computing. |
Responsiveness |
Response time of the
system is low |
Response time of the
system is high. |
Security |
Cloud computing has less security
compared to Fog Computing |
Fog computing has high
Security. |
Speed |
Access speed is high
depending on the VM connectivity |
High even more compared
to Cloud Computing. |
Data Integration |
Multiple data sources can
be integrated. |
Multiple Data sources and
devices can be integrated. |
Mobility |
In cloud computing
mobility is Limited |
Mobility is supported
in fog computing |
Location Awareness |
Partially Supported in
Cloud computing. |
Supported in fog
computing. |
Number of Server Nodes |
Cloud computing has Few
number of server nodes. |
Fog computing has Large
number of server nodes. |
Geographical Distribution |
It is centralized. |
It is decentralized and
distributed |
Location of service |
Services provided
within the internet. |
Services provided at
the edge of the local network |
Working environment |
Specific data center
building with air conditioning systems |
Outdoor (streets,base
stations, etc.) or indoor (houses, cafes, etc.) |
Communication mode |
IP network |
Wireless communication:
WLAN, WiFi, 3G, 4G, ZigBee, etc. or wired communication (part of the IP
networks) |
Dependence on the quality
of core network |
Requires strong network
core. |
Can also work in Weak
network core. |
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