An Operating System is the basic software that controls a PC. It controls how the hardware functions, the communication with peripheral devices such as a monitor, a printer or a keyboard, the allocation of memory between all the applications, and the prioritization of applications in case several run concurrently. Each and every program which is installed on a desktop or a laptop operates by sending requests to the OS for different services by using an application program interface (API). The interaction with the OS can be done via a Graphical User Interface (GUI) or a command line. In the Internet hosting world, the Operating System is what runs a web hosting server as well as all the software installed on it, which includes not only website scripts, but also every other application such as a VOIP or a game server. In case there are virtual machines created, they use a guest OS that runs on the server host OS.
Multiple OS in Dedicated Servers
If you decide to obtain one of our dedicated servers, you'll find three Operating Systems on the registration page because we want to give you a wider choice for the system environment on your machine as different applications could have specific requirements. CentOS, Ubuntu and Debian feature different modules developed by their large support communities, so you can select each of these OSs and take advantage of a reliable and secure web hosting service. Based on your selection, you will also have different Control Panels to choose from. Needless to say, we can always replace the Operating System in case the one you have selected at first doesn't meet the requirements of the software that you intend to run. We can also update the OS routinely to keep it as secure as possible with our Managed Services upgrade package.