According to the NIST Definition of Cloud Computing Measured service implies

that

Select one:

a$.$ capabilities can be adaptively provisioned and released, in some cases

automatically, to scale rapidly outward and inward commensurate with demand To the

consumer the capabilities available for provisioning often appear to be unlimited and can

be appropriated in any quantity at any time

b$.$ a provider's computing resources are combined to serve multiple consumers using

a multi$-$tenant model, with different physical and virtual resources dynamically assigned

and reassigned according to consumer demand.

c$.$ systems automatically control and optimise resource use by leveraging a

metering capability at some level of abstraction appropriate to the type of service

e$.$g$..$ storage. processing, bandwidth. and active user accounts

d$.$ a consumer can unilaterally provision computing capabilities. such as server time

and network storage, as needed automatically without requiring human interaction with

each service provider.