Virtuozzo Containers is a popular virtualization platform, that is used to generate virtual servers on physical machines. Each VPS made with it is a separate software emulation of a hosting server, therefore it has its own OS. The system resources are also fixed, so if you buy a VPS plan with certain disk space, CPU and RAM quotas, they'll always be at your disposal and will not be shared with another user on the physical server. The Virtuozzo Containers software is really intuitive and user-friendly, so even if you don't have much experience, you can control the entire server with a web-based graphical interface. With only a couple of clicks, you will be able to start/stop/reboot your virtual machine, manage firewall rules, set up server-side software and do numerous maintenance tasks. You can also watch how much resources your sites are using in real time and all of this data can tell you if you need an upgrade while you expand your world-wide web presence. When needed, you can even reset the entire VPS to its original software setup.