RAM, which stands for Random Access Memory, is a computer storage media that may be accessed way quicker than a hard disk, due to the fact that the information can be read randomly, skipping the bytes before the needed info is reached. On a hosting server, the RAM is used to load scripts and web programs after they are executed, so the more RAM you are able to use, the more programs you shall be able to run simultaneously and the more people will be able to surf your websites without effect on the site’s/server’s general performance. Unlike a disk drive, however, the RAM is employed for temporary storage purposes, as the data is lost once the power is shut off. When you use a shared web hosting account, the physical memory which your scripts could use may be limited and may change according to what the some other clients on the same server use. With a virtual or a dedicated web server, alternatively, you will have a guaranteed amount of RAM which won't be used by anyone else even if you do not use it at a certain time.