cloud storage (p. 25): Cloud storage is simply the delivery of virtualized storage on demand. The formal term that is used for this is Data storage as a Service (DaaS).
¶ By abstracting data storage behind a set of service interfaces and delivering it on demand, a wide range of actual offerings and implementations are possible. The only type of storage that is excluded from this definition is that which is delivered in fixed-capacity increments instead of based on demand. . . .The difference between the purchase of a dedicated appliance and that of cloud storage is not the functional interface, but the fact that the storage is delivered on demand. The customer pays for either what they actually use or what they have allocated for use (†917)
cloud storage (p. 20, s.v., "data storage as a service"): DaaS. Delivery of virtualized storage and data services on demand over a network, based on a request for a given service level that hides limits to scalability, is either self-provisioned or provisionless, and is billed based on consumption. (†918)
Infrastructure as a Service (IaaS) (p. 20): Delivery over a network of an appropriately configured virtual computing environment, based on a request
for a given service level (†919)
Platform as a Service (PaaS) (p. 21): PaaS: Delivery over a network of a virtualized programming environment, consisting of an application deployment stack based on a virtual computing environment ¶ Note: Typically, PaaS is based on IaaS, is either self-provisioned or provisionless, and is billed based on consumption. (†920)
private cloud (p. 21): Delivery of SaaS, PaaS, IaaS, and/or DaaS to a restricted set of customers, usually within a single organization. (†921)
public cloud (p. 21): Delivery of SaaS, PaaS, IaaS, and/or DaaS to, in principle, a relatively unrestricted set of customers. (†922)
Software as a Service (SaaS) (p. 22): SaaS: Delivery over a network, on demand, of the use of an application (†923)
