What is a cloud & essential characteristics of the cloud

“What is a Cloud” Please respond to the following:

So, what is Cloud? Cloud is a set of pooled resources delivered over the internet. Cloud allows you to deliver services globally to your customers at the least cost, and with the ability to service a variable workload by scaling the underlying resources up and down to meet the needs of the moment, and at the cost only of the resources consumed.

Apple Cloud and define its functionality and capabilities.

“Essential Characteristics of the Cloud” Please respond to the following:

On-demand, broad network access, resource pooling, rapid elasticity, measure service, charge by usage (“pay as you go”) are the essential characteristics of the Cloud.

Describe essential characteristics to the cloud.