The term VPS stands for Virtual Private Server and indicates a particular web hosting solution designed for the customers who need a more powerful solution than conventional shared hosting plans. The VPS is a server dedicated to all intents and purposes, the only difference compared to a normal physical server is that it is a virtual machine with its own dedicated resources.
VPS is completely confined within the system, so that each customer has dedicated resources, as stated by the provider and has full access to the system, with the ability to install software and make changes if the system is already in place.
This article tells you how to proceed to select a VPS to suit your needs, going to see the most common solutions in the market, based respectively on Xen / KVM, VMware and Virtuozzo. Cloud Server are products that are technically not covered by the traditional characteristics of a VPS. But from function its actually the same, in fact a level up.