RAM, which stands for Random Access Memory, is a computer storage media which may be accessed noticeably faster than a hard disk, due to the fact that the data can be read randomly, skipping the bytes before the needed data is reached. On a web server, the RAM is used to load scripts and web programs once they are executed, so the more RAM you are able to use, the more applications you will be able to run simultaneously and the more people shall be able to browse your Internet sites without effect on the site’s/server’s functionality. In contrast to a disk drive, however, the RAM is employed for short-term storage purposes, due to the fact that the data is lost as soon as the power is shut off. In case you use a shared web hosting account, the physical memory which your scripts could use may be limited and could change based on what the other customers on the same server use. Using a virtual or a dedicated hosting server, alternatively, you shall have a fixed amount of RAM that won't be used by anybody else even when you don't use it at a given time.