RAM is an abbreviation for Random Access Memory. This is a kind of computer memory, which, in contrast to other storage devices including hard disks or DVDs, enables the info to be accessed directly without reading the previous content located inside it. Every time an application is launched, it is stored in the RAM, due to the fact that it could be accessed considerably faster than if it was read from another media device. With regard to the hosting service itself, extra RAM means that more web applications can operate at the same time on a given web server, particularly if they are resource-demanding and are accessed by a large number of people concurrently. Unlike a shared web hosting package in which the resources of a particular account could be flexible and often depend on what other users consume also, a VPS offers a guaranteed amount of RAM you can use at all times. That memory is assigned to one hosting server only and won't be used by other clients even if it's not used.