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Cloud computing

Overview#

Cloud computing is a type of Internet-based computing that provides shared computer processing resources and data to computers and other devices on demand.

Best definition of Cloud or Cloud computing: "Other people's computers"

Cloud computing is a model for enabling ubiquitous, on-demand access to a shared pool of configurable computing resources (e.g., computer networks, servers, DataStore, applications and services), which can be rapidly provisioned and released with minimal management effort.

Cloud computing and Cloud Data Store Service solutions provide users and enterprises with various capabilities to store and process their data in third-party Data Centers that may be located far from the user–ranging in distance from across a city to across the world.

Cloud computing relies on sharing of resources to achieve coherence and economy of scale, similar to a utility (like the electricity grid) over an electricity network.

Advocates claim that Cloud computing allows companies to avoid upfront infrastructure costs (e.g., purchasing servers). As well, it enables organizations to focus on their core businesses instead of spending time and money on computer infrastructure.

Proponents claim that Cloud computing allows enterprises to get their applications up and running faster, with improved manageability and less maintenance, and enables Information Technology (IT) teams to more rapidly adjust resources to meet fluctuating and unpredictable business demand.

Cloud computing providers typically use a "pay as you go" model.

Cloud computing are usually classified into one or more of the Cloud Services Models

Above the Clouds: A Berkeley View of Cloud Computing#

Above the Clouds: A Berkeley View of Cloud Computing a 2009 defined Cloud computing as:

Cloud computing refers to both the applications delivered as services over the Internet and the hardware and systems software in the Data Centers that provide those services. The services themselves have long been referred to as Software as a Service (SaaS). The datacenter hardware and software is what we will call a Cloud. When a Cloud is made available in a pay-as-you-go manner to the general public, we call it a Public Cloud; the service being sold is Utility Computing.
We use the term Private Cloud to refer to internal datacenters of a business or other organization, not made available to the general public.

Thus, Cloud computing is the sum of SaaS and Utility Computing, but does not include Private Clouds. People can be users or providers of SaaS, or users or providers of Utility Computing. We focus on SaaS Providers (Cloud Users) and Cloud Providers, which have received less attention than SaaS Users.

Cloud computing Components#

Most Cloud computing Service Providers provide at Least the first Two:

Cloud computing Service Providers#

More Information#

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