RAM is an abbreviation for Random Access Memory. This is a type of computer memory, that, in contrast to other storage devices including hard disk drives or DVDs, permits the info to be accessed directly without reading the previous content located inside it. Whenever an app is launched, it's stored within the RAM, due to the fact that it may be accessed much faster than if it was read from another media. With regards to the hosting service itself, additional RAM means that more web apps can work simultaneously on a particular server, particularly when they're resource-demanding and are accessed by a great number of of people all at once. In contrast to a shared web hosting plan in which the system resources of a given account can be flexible and sometimes depend on what other end users consume also, a VPS includes a guaranteed amount of RAM which you can use all the time. That memory is allotted to one web server only and won't be used by other clients even when it is not used.