What is the innovative characteristic of Cloud Computing?

Cloud computing's innovative characteristic is its ability to provide computing as a utility. It benefits both the cloud computing providers and as well as cloud service consumers. The model helps user to consume computing as utility in quantities of choice. It helps cloud service providers to build data centers and produce computing on large scale and sell or " provision"  to end user in varying degree of customisation and quantities.  For end user upfront costs are avoided and for service provider costs can be recovered at different service and price-points  

For a common person may buy a storage of 1MB for some use and an entrepreneur may buy compute for some business idea testing. 

Examples 

• Storage is charged at Rs 6.75 (per GB/ month).
•  2 cores, 4 GB RAM is Rs 2.20 per VM per hour.