RAM is an abbreviation for Random Access Memory. This is a type of computer memory, that, different from other storage devices including hard disks or DVDs, permits the info to be accessed directly without reading the previous content saved in it. Whenever an application is started, it is stored in the RAM, due to the fact that it may be accessed much quicker than if it was read from another media device. With regards to the website hosting service itself, additional RAM means that more web apps can operate simultaneously on a particular server, particularly when they're resource-demanding and are accessed by a large number of people concurrently. In contrast to a shared web hosting package where the resources of a particular account could be flexible and often depend on what other end users consume as well, a VPS provides a guaranteed amount of RAM that can be used always. That memory is allotted to one web server only and shall not be used by other clients even if it is not in use.