From what I have recently researched and found, mainly online, is that RapidSwitch is a leading server hosting company over in the U.K., with well over 4000 servers that they host for a wide and ever growing range of clients and have been in this business since 1999 and still growing by leaps and bounds. It was only three and a half years ago that they were very happy to announce their launching of virtual servers, and that they are still offering promotions in honor of that launching that folks could be taking advantage of.
Virtual servers are an interesting method of partitioning a physical server computer into multiple servers in a way that each has the appearance and capabilities of running on its own dedicated machine. Each virtual server can run its own full-fledged operating system, and then each server then can be independently rebooted. A good thing to have and to know about. RapidSwitch has an interesting website that is easy to understand, which can be a challenge for me sometimes. Always being busy with the farm, always in a hurry, no time to really focus and get good quality time to try and learn things and then find the time to process the information.
Farming sure has changed a lot in the past couple of decades.