A public
cloud is a shared-service environment accessible to any buyer. This option
offers economies of scale, but concerns about security, privacy, trust and
control limit mission-critical uses, according to Gartner. Public clouds are
the most widely used option and work well for growing businesses that need
immediate access to services to meet rapid increases in storage needs or
computing demand. Programs like SalesForce and Dropbox are public cloud
services.
Explaining Public Clouds
Public
clouds are “stand-alone,” or proprietary, clouds mostly off-premise, run by
third party companies such as Google, Amazon, Microsoft, and others. Public
clouds are hosted off customer premises and usually mix applications
(transparently) from different consumers on shared infrastructure.




