Virtuozzo Containers is a popular virtualization platform, that is used to make 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 predefined, therefore when you buy a VPS package with certain CPU, RAM and disk space allocations, they're always available and won't be shared with another user on the server. The Virtuozzo Containers software is truly intuitive and convenient to use, so even if you don't have a lot of experience, you'll be able to control the whole server through a web-based graphical interface. With just a couple of clicks, you can 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 this information can inform you if you should have an upgrade when you expand your web presence. If needed, you're able to even reset the entire VPS to its original software setup.