Perhaps the best way to approach the virtual server is the idea of a virtual machine. A VM allows you to run an emulation of a computer within your computer, drawing on the resources of the physical one –  disk space, RAM, CPU, etc. This tactic allows you to run an entirely separate operating system (OS) solely for the purposes of the VM, even if its type and version of OS are identical to what’s on your hardware.
Deploy a full range of open-source and community-driven software solutions on Azure. Choose from a full range of Linux distributions like Red Hat, Ubuntu, SUSE, and community-driven solutions like Chef, Puppet, and Docker. Deploy virtual machines for other products like Oracle Database and Oracle WebLogic Server. Azure is open with lots of options.
Way of using resources In the case of shared hosting, websites and / or applications residing on the server make use of resources and available server capacity at the same time. In the case of VPS hosting, each websites and / or applications residing on the server is being allotted a virtually distinct server.  Here a separate, exclusive server is often rented.
Get the control panel you prefer by selecting it at order time. Either is available - it's strictly a matter of personal preference. Many people opt for cPanel, because of its popularity - and we can't fault them for that. However, it’s your VPS – so you’re in control - you can have other control panels and software installed instead - it's totally up to you (but faster setup times if you pick cPanel or DirectAdmin).
A virtual private server (VPS), also called a virtual dedicated server (VDS), is a virtual server that appears to the user as a dedicated server, but that is actually installed on a computer serving multiple websites. A single computer can have several VPSs, each one with its own operating system (OS) that runs the hosting software for a particular user.

VPS is short for a Virtual Private Server, which refers to the partitioning of a physical server into multiple servers. You can think of a VPS like a Dedicated Server, where you can enjoy all the components a Dedicated Server offers yet you pay a lower price. Each VPS also features its own OS (Operating System) and allows for separate rebooting. Since each OS receives a specific share of the resources from the physical server, each one is isolated from one another and cannot interfere.
The force driving server virtualization is similar to that which led to the development of time-sharing and multiprogramming in the past. Although the resources are still shared, as under the time-sharing model, virtualization provides a higher level of security, dependent on the type of virtualization used, as the individual virtual servers are mostly isolated from each other and may run their own full-fledged operating system which can be independently rebooted as a virtual instance.