What does the term "Cloud" mean?

Cloud or Cloud computing is an Internet based model of producing and delivering computer services, and use of computers. From consumer's perspective "Cloud" refers to the usage of dynamically scalable and often virtualized resources over the Internet.

To have a computer cloud (Server Cloud) anyone shall have a number of web servers connected into a system. The websites hosted on the cloud share (or have isolated) resources of all nodes part of the cloud infrastructure. There are redundancy of processor time, disc space and the RAM in the cloud. Any new serves or components can be installed on the system without taking it offline.

Cloud hosting is a web hosting service delivered from server cloud.