云计算与雾计算的区别

云计算：按需计算服务的交付称为云计算。我们可以使用应用程序来存储和处理互联网上的能力。这是一种即付即用的服务。无需拥有任何计算基础设施或任何数据中心，任何人都可以从云服务提供商处租用从应用程序到存储的任何内容。
我们可以通过使用云计算服务来避免拥有和维护基础设施的复杂性，并为我们使用的东西付费。
反过来，云计算服务提供商可以通过向广泛的客户提供相同的服务，从显着的规模经济中受益。

雾计算：雾计算是一种分散的计算基础设施或过程，其中计算资源位于数据源和云或任何其他数据中心之间。雾计算是一种在边缘网络为用户请求提供服务的范式。雾层设备通常执行与网络相关的操作，如路由器、网关、网桥和集线器。研究人员设想这些设备能够同时执行计算和网络操作。尽管与云服务器相比，这些设备资源受限，但地理分布和分散性有助于提供覆盖广泛区域的可靠服务。雾计算是设备的物理位置，它比云服务器更接近用户。

下表列出了云计算和雾计算之间的差异：

Feature	Cloud Computing	Fog 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.