http://cloudcomputingcourse.vibranttechnologies.co.in
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In a cloud computing system, there's a significant
workload shift. Local computers no longer have to do all the heavy lifting when
it comes to running applications. The network of computers that make up the
cloud handles them instead. Hardware and software demands on the user's side
decrease. The only thing the user's computer needs to be able to run is the
cloud computing systems interface software, which can be as simple as a Web
browser, and the cloud's network takes care of the rest.
There's a good chance you've already used some form
of cloud computing. If you have an e-mail account with a Web-based e-mail
service like Hotmail, Yahoo! Mail or Gmail, then you've had some experience
with cloud computing. Instead of running an e-mail program on your computer,
you log in to a Web e-mail account remotely. The software and storage for your
account doesn't exist on your computer -- it's on the service's computer cloud.
Cloud
Computing Pros and Cons
Service providers are responsible for installing and
maintaining core technology within the cloud. Some customers prefer this model
because it limits their own manageability burden. However, customers cannot
directly control system stability in this model and are highly dependent on the
provider instead.
Cloud computing systems are normally designed to
closely track all system resources, which enables providers to charge customers
according to the resources each consumes. Some customers will prefer this
so-called metered billing approach to save money, while others will prefer a
flat-rate subscription to ensure predictable monthly or yearly costs.
Public clouds are owned and operated by companies that use
them to offer rapid access to affordable computing resources to other
organizations or individuals. With public cloud services, users don’t need to
purchase hardware, software or supporting infrastructure, which is owned and
managed by providers.
Service providers create cloud computing systems to serve
common business or research needs. Examples of cloud computing services
include:
- virtual IT - configure and utilize remote, third-party servers as extensions to a company's local IT network
- software - utilize commercial software applications, or develop and remotely host custom built applications
- network storage - back up or archive data across the Internet to a provider without needing to know the physical location of storage
