I need the details about cloud computing?

1.what is cloud computing?

2.were it's using?what is the need for using cloud computing?

3.advantage and disadvantage of cloud computing?

4.what is the difference between while using actual server and cloud server?



and please provide a web site for cloud computingI need the details about cloud computing?
back dateted computerI need the details about cloud computing?
cloud computing means without wiress u can access internet

,it means u can use internet without modem and any thing