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#1 Posted : 21 August 2019 10:14:36(UTC)

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Cloud Computing
Cloud computing is the delivery of on-demand computing services – from applications to storage and processing power – typically over the internet.
Rather than a company owning their own computing infrastructure or data centers, companies can rent access to anything from applications to storage from a cloud service provider. Cloud computing can be used for an unreal amount of services such as consumer services (Gmail) and software vendors who are now starting to offer their applications as services over the internet using a subscription model rather than stand-alone products.

Fog Computing
Fog computing was first created by Cisco with a goal to extend cloud computing to the edge of a company’s network. Fog computing is the concept of a network infrastructure that stretches from the outer edges of where data is created to where it will eventually be stored, whether it be in the cloud or in a customer’s data center.

Mist Computing
Mist computing is the extreme edge of a network, typically consisting of micro-controllers and sensors. Mist computing uses microcomputers and microcontrollers to feed into fog computing nodes and potentially onward towards the centralised (cloud) computing services.

What to take away from this?
What you should take away from this blog post is that there are various different kinds of computing models such as cloud, fog, and mist computing. All these computing models have their own advantages and disadvantages, which makes them suitable for specific applications. For example, Mist and Fog computing are great for real time data analytics as companies can now analyse their data locally from the sensor itself, or from the gateway/router, instead of having to send the data all the way up to the cloud first. Another important thing to understand is how these different computing models relate to one another. In computing, we can envision Amazon as the thick cloud layer. Beneath that lies the fog, which consist of cloud-lets such as gateways and routers. These support the cloud, but are not part of the massive cloud server structure. Beneath the fog, we have have the mist, which is made up of smart devices and sensor networks, this area is what we refer to as the edge.

Benefits of each one along with a comparison, can be found here https://radiocrafts.com/...hich-one-should-you-use/
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