RAM, that means Random Access Memory, is a computer storage media which may be accessed faster than a hard disk drive, 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 employed to load scripts and web applications after they are executed, so the more RAM you may use, the more apps you will be able to run all at once and the more people will be able to check out your Internet sites without any effect on the site’s/server’s overall performance. In contrast to a disk drive, however, the RAM is employed for short-term storage purposes, as the data is lost when the power is shut off. In case you use a shared web hosting account, the physical memory which your scripts can use may be limited and could change according to what the some other clients on the same web server use. Through a virtual or a dedicated web 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.