Cloud computing is the delivery of computing as a service whereby shared resources, software and information are provided to computers, and also other devices, as a utility over a network. Cloud computing is a general term for anything that involves delivering hosted services over the Internet.
A true cloud solution is one where users can access a flexible volume of services, as needed, via the Internet. It is one of the fastest growing development sectors in the world due to the expected demand.
There are 4 different types of clouds, namely Public, Community, Hybrid and Private (with Public and Private as the 2 main clouds).
Public Cloud – A public cloud is a service that anyone with a network connection can access. A service provider makes resources (e.g. applications and storage) available to the general public over the Internet.
Private Cloud – A private cloud is infrastructure operated only for a single organisation, is managed either internally or by a third-party and is hosted internally or externally.
Community Cloud – A community cloud shares infrastructure between several organizations from a specific community with common concerns.
Hybrid Cloud – A hybrid cloud is multiple cloud systems (private, public and community) that are connected in a way that allows programs and data to be moved easily from one deployment system to another.
Benefits of cloud computing:
· Shared development costs on business applications;
· New functionality;
· Organisations only pay for services and space it uses.
According to IDC predictions for 2011, 80% of new software will be available as cloud services; by 2014, over one-third of software purchases will be delivered through the cloud.
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