Which cloud computing characteristic enables consumers to grow and shrink the demand for
resources dynamically?

A.
Rapid elasticity

B.
Resource pooling

C.
Measured service

D.
On-demand self-service

Explanation:
Rapid Elasticity
Capabilities can be elastically 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. Consumers can leverage rapid elasticity of the cloud when they have a fluctuation in
their IT resource requirements. For example, an organization might require doubling the number of
web and application servers for a specific duration to accomplish a specific task. For the remaining
period, they might want to release idle server resources to cut down the expenses. The cloud
enables consumers to grow and shrink the demand for resources dynamically.
EMC E10-001 Student Resource Guide. Module 13: Cloud Computing