What is Cloud Computing ?

Cloud computing refers to the abstraction of web based computers, resources and services that system developers can utilize to develop their system rather than possessing local resources. In other words cloud computing enables companies to consume compute resources as a utility — just like electricity — rather than having to build and maintain computing infrastructures in-house. In cloud computing, the word “cloud” symbolizes  for “the Internet,” so the phrase cloud computing means “a type of Internet-based computing“, where different services — such as servers, storage and applications —are delivered to an organization’s computers and devices through the Internet.

Clouds allow access to remote computing services, which are generally delivered by a single party. Users only have to pay for what they use, when they want to use it.

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How Cloud Computing Works?

Let view the cloud as it consists of layers -mainly the back end layers and the front end layers. The front layers are the parts we see and interact with. For example, say when we access our profile on Facebook account, we are using software running on the front end of the cloud. The back end consists of the hardware and the software architecture that delivers the data we see on the front end.

Clouds use a network layer to connect users’ end point devices, like computers or smart phones, to centralized resources in a data centre. Users can access the data centre via a company network or the internet or both. Clouds can also be accessed from any location, allowing mobile workers to access their business systems on demand.

Applications running on the cloud take advantage of the flexibility of the computing power available. The computers are set up to work together so that it appears as if the applications were running on one particular machine. This flexibility is a major advantage of cloud computing, allowing the user to scale up or down as much of the cloud resources as they want at short notice, without any assigning any specific hardware for the job in advance.

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