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These days the topic cloud computing is in the air. Cloud computing has changed the face of IT industry; it’s a revolution by itself. There are two ways to categorize clouds kick on IT – financial & operational. The total cost of hardware and software has gone down for the end users as buying, licensing and maintenance has been removed. Furthermore the services for cloud provider are based on a “pay as you go model”, so as an end user one can pay for the services which are actually used in the business.
The operational side is also benefited at the same time. The related performance functions, like the data and application back-up, uptime and availability, which are controlled by the cloud provider.
What exactly is cloud computing and what is its impact?
Cloud computing is a internet based model of computing where resources software and data are shared and provided to computers that are on demand, like the electricity grid. The work is accomplished through the use of many computers that exist online. It is like client server mechanism wherein one computer can get resources from multiple internet connected device.
Several different components of cloud computing are: cloud infrastructure, cloud platform, and cloud application. Cloud infrastructure, or infrastructure as a service, refers to as providing a computer infrastructure as a service. Cloud platform, or platform as a service, refers to providing a computer platform or software stack as a service. Platform is a higher level of abstraction than infrastructure. Cloud applications are Web services that run on top of a cloud computing component.
Many users already use services that run on a cloud computing component, like e–mail services (eg: Gmail, Hotmail, Yahoo, YouTube), most of people online use at least one cloud computing–based service, whether or not they realize it is a cloud–based service. In late 2008, Google announced that they were able to sort one petabyte of data in roughly six hours using 4,000 computers, via their cloud computing architecture (Czajkowski, 2008).
What is cloud?
The tremendous growth of the Web over the last decade has given rise to a new class of “Web–scale” problems — challenges such as supporting thousands of simultaneous e–commercial transactions or millions of search queries a day. In response, companies have built increasingly large data centers which consolidate a great number of servers with adequate storage, networking, and cooling facility, to handle this ever increasing demand. Cloud computing can also serve as a means of delivering “utility computing” services, in which computing capacity is treated like pay–as–you–go utility service.
Cloud computing opens up the possibility that a major cloud provider like Google could ultimately become “the world’s primary computer.”