Discussion
The NIST definition lists five essential characteristics of cloud computing, the first of which is
Answer: A
Correct answer: on-demand self-service
NIST lists five: on-demand self-service, broad network access, resource pooling, rapid elasticity and measured service. Self-service comes first because it is the one that changes how the organisation works - capacity is obtained without raising a request or waiting on anyone, which is what turns provisioning from a project into a command. Unlimited capacity, guaranteed availability and free access are none of them, and no provider offers any of the three.
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