RAM is an abbreviation for Random Access Memory. This is a type of computer memory, that, unlike other storage devices such as hard disks or DVDs, permits the info to be accessed directly without reading the previous content located inside it. Anytime an app is launched, it is stored in the RAM, since it may be accessed considerably faster than if it was read from another media device. With regards to the web hosting service itself, more RAM means that more web apps can operate simultaneously on a certain hosting server, particularly when they are resource-demanding and are accessed by a great number of of people all at once. Unlike a shared web hosting solution where the system resources of a particular account could be flexible and often depend on what other users consume too, a VPS provides a guaranteed amount of RAM you can use all the time. That memory is assigned to one hosting server only and won't be used by other customers even if it's not used.