RAM is an abbreviation for Random Access Memory. This is a sort of computer memory, which, in contrast to other storage devices like hard disks or DVDs, permits the info to be accessed directly without reading the previous content located within it. Each time an app is launched, it's stored within the RAM, because it can be accessed considerably quicker than if it was read from another media. With regards to the web hosting service itself, extra RAM means that more web applications can run concurrently on a given web server, particularly if they're resource-demanding and are accessed by a great number of of people simultaneously. Unlike a shared web hosting solution in which the resources of a particular account can be flexible and frequently depend on what other end users consume also, a VPS has a guaranteed amount of RAM you can use always. That memory is allocated to one hosting server only and won't be used by other clients even in case it is not being used.