Seminar on Cloud computing
Cloud computing means using multiple server computers via a digital network, as though they were one computer. Often, the services available are considered part of cloud computing.
Traditionally, without a cloud, a web server runs as a single computer or a group of privately owned computers. The computer(s) are powerful enough to serve a given amount of requests per minute and can do so with a certain amount of latency per request. If the computer's website or web application suddenly becomes more popular, and the amount of requests are far more than the web server can handle, the response time of the requested pages will be increased due to overloading. On the other hand, in times of low load much of the capacity will go unused.
If the website, service, or web application is hosted in a cloud, however, additional processing and compute power is available from the cloud provider. The website would share those servers with perhaps thousands of other websites varying size and memory. If the website suddenly becomes more popular, the cloud can automatically direct more individual computers to work to serve pages for the site, and more money is paid for the extra usage. If it becomes unpopular, however, the amount of money due will be less. Cloud computing is popular for its pay-as-you-go pricing model.
Cloud computing visual diagram
Clouds are sometimes set up within large corporations, or other institutions, so that many users all share the same server power. As computer power gets cheaper, many different applications are provided and managed by the cloud server. In many cases, users might not download and install applications on their own device or computer; all processing and storage is maintained by the cloud server.
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