On-Demand refers to a service or feature which addresses the user's need for
instant gratification and immediacy of use. In most cases the value
proposition for an on-demand service is wrapped up in the fact that the user
or consumer of the service avoids a significant up-front financial
investment and instead participates in a "pay as you go" plan - a model
which makes on-demand services frequently more affordable for users.
Some types of On-demand services include:
Video on demand is a type of video or movie service which allows the viewer
to access the media immediately upon subscription, such as streaming
Internet or pay-per-view television offerings.
On-demand computing may also be referred to as Utility computing, and most
frequently refers to a type of computing service where the actual software
is presented to the user, once a subscription to the service is successfully
processed. In a typical "on-demand" computing model, the software is not
actually installed at the user device, rather it is accessed via the
Internet or centralized access point.
On-demand software is typically delivered by an application service
provider. This type of service offering is also frequently referred to as
Software as a Service
Print on demand, also known as publishing on demand, is a type of publishing
method used by low-quantity book publishers, whereby authors may have their
materials available for print publication without investing the up-front
costs of initial publication.
Retrieved from "http://en.wikipedia.org/wiki/On-demand"
From: Wikipedia
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