Virtuozzo Containers is a widely used virtualization platform, that's used to set up virtual servers on physical machines. Each VPS made with it is an independent software emulation of a hosting server, therefore it has its own OS. The resources are also preset, which means that if you buy a VPS package with certain disk space, CPU and RAM quotas, they will always be at your disposal and won't be shared with any other user on the physical server. The Virtuozzo Containers software is very intuitive and convenient to use, so even if you don't have a lot of experience, you can control your entire server using a web-based graphical interface. With only a few clicks, you can start/stop/reboot your virtual machine, set firewall rules, install server-side software applications and perform various maintenance tasks. You may also track the amount of resources your web sites are using live and this info will inform you whether you need an upgrade while you expand your web presence. If needed, you will be able to even reset the whole VPS to its original software setup.