Cloud computing is very attractive to the users:
Economic reasons.
low infrastructure investment.
low cost – customers are only billed for resources used.
Convenience and performance.
application developers enjoy the advantages of a just-in-time
infrastructure; they are free to design an application without being
concerned with the system where the application will run.
the execution time of compute-intensive and data-intensive applications
can, potentially, be reduced through parallelization.  If an application can
partition the workload in
n
segments and spawn
n
instances of itself, then
the execution time could be reduced by a factor close to
n
.
✒ Cloud computing is also beneficial for the providers of computing cycles -
it typically leads to a higher level of resource utilization.