Partitioning a single server to appear as multiple servers has been increasingly common on microcomputers since the launch of VMware ESX Server in 2001. The physical server typically runs a hypervisor which is tasked with creating, releasing, and managing the resources of "guest" operating systems, or virtual machines. These guest operating systems are allocated a share of resources of the physical server, typically in a manner in which the guest is not aware of any other physical resources save for those allocated to it by the hypervisor. As a VPS runs its own copy of its operating system, customers have superuser-level access to that operating system instance, and can install almost any software that runs on the OS; however, due to the number of virtualization clients typically running on a single machine, a VPS generally has limited processor time, RAM, and disk space.[2]
Last के कुछ सालो मे web hosting मे बहुत से changes देखने को मिल रहे है और इन नए changes मे cloud web hosting, web hosting की तेजी से उभरती हुई service and trend है जो की worldwide different business use करते है | Cloud hosting के grow होने का reason traditional web hosting (shared hosting, VPS and dedicated) के different issues है जैसे की performance, cost etc | 
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