Virtuozzo Containers is a popular virtualization platform, that's used to make virtual servers on physical machines. Every VPS made with it is an independent software emulation of a server, therefore it has its own OS. The resources are also predefined, so when you acquire a VPS package with certain disk space, CPU and RAM allocations, they are always available to you and won't be shared with some other customer on the server. The Virtuozzo Containers software is particularly intuitive and easy to use, so even if you don't have much experience, you'll be able to control the entire server through a web-based graphical interface. With a few clicks, you can easily start/stop/reboot your virtual machine, manage firewall rules, set up server-side software packages and do plenty of maintenance tasks. You can also watch what amount of resources your sites are using in real time and all this info will tell you whether you will need upgrading when you expand your online presence. If needed, you'll be able to even reset the entire VPS to its original software setup.