What is the main benefit of Utility Computing?

What is the main benefit of Utility Computing?

A.
high availability

B.
better economics

C.
scalability

D.
better security

Explanation:
The focus of utility computing is the business model on which providing the
computing services are based. The main benefit of utility computing is better
economics. Corporate data centers are typically underutilized. Utility computing
allows companies to only pay for the computing resources they need, when they need
them. Utility computing is very similar to public cloud computing, except perhaps it
doesn’t necessarily imply self-service, elastic capacity, or multi-tenancy. It does imply

pay-per-use.
Note: Utility computing is an on-demand approach that combines outsourced computing
resources and infrastructure management with a usage-based payment structure. It
covers the packaging of computing resources, such as computation and storage, as a
metered service similar to a physical public utility. Utility computing has the
advantage of a low or no initial cost to acquire hardware as computational resources
are essentially rented.
Reference: Oracle Reference Architecture, Application Infrastructure Foundation, Release 3.0