One of the main benefits of using cloud hosting services is flexible and more cost-efficient scalability in building applications, websites and other services. Because users can scale as needed, they are charged only for the services they use and do not pay for any unused capacity. This payment system makes cloud hosting a relatively inexpensive method of storage.
Rather than being hosted on one single instances of a physical server, hosting is delivered on a virtual partition which draws its resource, such as disk space, from an extensive network of underlying physical servers. If one server goes offline it will have no effect on availability, as the virtual servers will continue to pull resource from the remaining network of servers.