RAM, which refers to Random Access Memory, is a computer storage media that is accessed way quicker than a disk drive, due to the fact that the data can be read randomly, skipping the bytes before the needed information is reached. On a hosting server, the RAM is used to load scripts and web apps once they are executed, so the more RAM you are able to use, the more programs you shall be able to run all at once and the more people will be able to explore your sites without effect on the site’s/server’s overall performance. In contrast to a disk drive, however, the RAM is used for momentary storage purposes, as the data is lost as soon as the power is shut off. When you use a shared web hosting account, the physical memory which your scripts may use may be limited and may change according to what the other customers on the same server use. Through a virtual or a dedicated hosting server, however, you will have a fixed amount of RAM that won't be used by others even when you do not use it at a particular time.