RAM is an abbreviation for Random Access Memory. This is a kind of computer memory, which, in contrast to other storage devices including harddrives or DVDs, permits the data to be accessed directly without reading the previous content saved within it. Every time an app is launched, it is stored in the RAM, since it can be accessed considerably faster than if it was read from another media. In terms of the website hosting service itself, extra RAM means that more web applications can run at the same time on a particular server, especially when they are resource-demanding and are accessed by a significant number of people at the same time. In contrast to a shared web hosting package in which the resources of a given account may be flexible and frequently depend on what other end users consume too, a VPS features a guaranteed amount of RAM you can use at all times. That memory is allocated to one server only and will not be used by other customers even in case it's not used.