What is Cloud Computing

What is Cloud Computing:

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Cloud computing is a general term for anything that has to do with the provision of hosting services over the Internet. These services are divided into three broad categories: Infrastructure as a service (IaaS), platform as a service (PaaS) and software as a service (SaaS). The name of cloud computing was inspired by the cloud symbol that is often used to represent the Internet in images and flowcharts.

Cloud services have three distinct features that unmark them from traditional hosting. On the one hand, charging is carried out according to use, usually per minute or per hour; the service is elastic since the user can use as much as he wants and at any time he wishes; Finally, the service is managed entirely by the provider (the consumer does not need anything except a personal computer and Internet access).

The important innovations in virtualization and distributed computing, the great advances in the speed of Internet access and the general economic weakness have given a great boost to cloud computing.

The clouds can be private or public. A public cloud is the one that sells services on the Internet to any user. (Currently, Amazon Web Services is the leading provider in a public cloud.) Private clouds are a network or data center that belongs to an organization and offers hosting services to a limited number of people. When the service provider uses public cloud resources to create its private cloud, the result is called a virtual private cloud. Whether private or public, the goal of cloud computing is to provide access to computing resources and IT services in a simple and scalable way.

Infrastructure as a service — a good example is Amazon Web Services — offers a virtual server instance (API). In the original, CHECK is also “scattered” to start, stop, access and configure your virtual servers and storage. In the business field, cloud computing allows companies to pay only for the capacity used and go to the Network as necessary. Since this model based on payment for use resembles the way in which electricity, gasoline, and water are consumed, computing is sometimes referred to as a basic service ( utility computing ).

The platform as a service (PaaS) in the cloud is defined as a set of software and product development tools hosted on the service provider's infrastructure. Developers create applications on the provider's platform through the Internet. PaaS providers can use APIs, Internet portals or web gateway software installed on the user's computer. Force.com, (a development of Salesforce.com) and GoogleApps are examples of PaaS. Programmers should know that, currently, there are no standards for interoperability or portability of information in the cloud. S ... https://www.youtube.com/watch?v=HpDnjl_Fd_4