Software as a service is the latest incarnation of the hosting model. The demand for cost efficiency, information technology flexibility, and faster return on investment, coupled with new technology advancements, has caused the hosting model to be reborn.
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and companies such as Google , Yahoo! , and Microsoft , are refining their capabilities to target users with context-based advertisements. Shift to Hosted Models Burned by negative experiences deploying unwieldy packaged software suites on their premises, users are now wiser and more assertive. Increasingly, they are demanding software that is easy to purchase, easy to consume, and has tangible payback or return on investment (ROI). For users, their purchasing demands have almost become akin to retail