RAM is an abbreviation for Random Access Memory. This is a kind of computer memory, which, unlike other storage devices such as hard disk drives or DVDs, enables the data to be accessed directly without reading the previous content saved inside it. Anytime an application is started, it is stored within the RAM, due to the fact that it can be accessed much quicker than if it was read from another media device. With regards to the hosting service itself, extra RAM means that more web applications can operate concurrently on a particular web server, especially if they are resource-demanding and are accessed by a great number of of people all at once. Unlike a shared web hosting package in which the system resources of a given account could be flexible and often depend on what other end users consume also, a VPS features a guaranteed amount of RAM you can use all the time. That memory is allocated to one server only and will not be used by other clients even if it is not used.