Cloud computing is the
next level in the Internet's evolution, providing the means through which
everything from computing power to computing infrastructure, applications,
business processes to personal collaboration can be delivered to you as a
service wherever and whenever you need.
The
“cloud” in cloud computing can be defined as the set of hardware, networks,
storage, services, and interfaces that combine to deliver aspects of computing
as a service. Cloud services include
the delivery of software, infrastructure, and storage over the Internet (either
as separate components or a complete platform) based on user demand.
Cloud computing is
offered in different forms: public clouds, private clouds, and hybrid clouds,
which combine both public and private.
Cloud
computing can completely change the way companies use technology to service
customers, partners, and suppliers. Some businesses, such as Google and Amazon,
already have most of their IT resources in the cloud. They have found that it
can eliminate many of the complex constraints from the traditional computing
environment, including space, time, power, and cost.
· On-demand self service: Self service portal with service
catalog that can automatically trigger workflows for routing, approvals and
automated provisioning
· Broad network access: Service is accessible via internet or
company network (private cloud) using various devices such as thick/ thin
clients, laptops and mobile devices
· Resource pooling: This implies timesharing of abstracted
IT resources (compute, storage, network) from underlying hardware via various
enabling technologies such as virtualization
· Rapid elasticity: This requires one to dynamically
increase or decrease IT resources provisioned, according to changing demands,
where possible, automatically
· Measured service: This means that capacity and utilization
is being monitored and reported for capacity planning, demand and forecasting.
It also includes monitoring and reporting service usage for the purpose of
chargeback or showback.
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