[t]he cloud infrastructure . . . provisioned for open use by the general public. It may be owned, managed, and operated by a business, academic, or government organization, or some combination of them. It exists on the premises of the CSP and/or its suppliers.[2]
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Overview[]
Public cloud computing represents a significant paradigm shift from the conventional norms of an organizational data center to a deperimeterizedinfrastructure open to use by potential adversaries.[3] The Figure below presents a simple view of a public cloud and its customers.
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[In p]ublic clouds . . . services are offered to individuals and organisations who want to retain elasticity and accountability without absorbing the full costs of in-house infrastructures. Public cloud users are by default treated as untrustworthy.[4]