Cloud computing is a style of computing in which virtualized and standard resources are provided as a service over the Internet. It conceptualize Web-Oriented Architecture (WOA) and Virtualization in Reality. It provide services usually for business applications online that are accessed from a web browser, while the software and data are stored in the cloud.
Basic concept behind cloud computing is to create a social cloud where user can interact or ask the environment for their data. User can use the cloud to store lots of data, applications and user can interact with the cloud using mobiles, desktop computers or internet from anywhere in the world. Computing at the scale of the cloud allows users to access supercomputer-level power. All processing power is in the cloud where all data and applications lie.
Cloud Computing is poised to be a major disruption in the IT industry. Organizations with limited resources and expertise in technology infrastructure may rely on “Cloud Computing” to dynamically adjust the resources available to them by tapping into vendors in the cloud to meet changing needs. It is an emerging computing technology that uses the internet and central remote servers to maintain data and applications. It allows consumers and businesses to use applications without installation and access their personal files at any computer with internet access.
Cloud Computing is closely related with Web 2.0. In particular both trends is the emergence of online applications known as Software as a Service (Saas). It can be contrasted with the traditional client/server model, where the all the resources lies on a central server and client can access them from anywhere. It is becoming one of the next industry buzz words. It joins the ranks of terms including: grid computing, utility computing, virtualization, clustering, etc.
Гугл plugs PC power into cloud computing. Гугл already lets people port some of their personal data to the Internet and use its Web-based software. Гугл Calendar organizes events, Picasa stores pictures, YouTube holds videos, Gmail stores e-mails, and Гугл Docs houses documents, spreadsheets, and presentations. To be sure, Гугл isn’t the only company invested in online storage and cloud computing. There are other services today that offer a significant amount of space and software in the cloud. “There are things you can do in desktop apps that you can’t do in Web apps. We’re working very hard to close that gap, so anything you can do in a desktop application you can do safely and securely from a Web application,” said Linus Upson, a Гугл engineering director.
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