RAM, which refers to Random Access Memory, is a computer storage media that could be accessed way quicker than a hard disk, simply because the data can be read randomly, skipping the bytes before the needed data is reached. On a server, the RAM is used to load scripts and web programs after they are executed, so the more RAM you may use, the more applications you will be able to run at the same time and the more people will be able to browse your websites with no effect on the site’s/server’s overall performance. In contrast to a disk drive, however, the RAM is used for short-term storage purposes, as the information is lost when the power is shut off. When you use a shared web hosting account, the physical memory that your scripts may use may be limited and might change based on what the other customers on the same server use. Through a virtual or a dedicated server, on the other hand, you shall have a set amount of RAM which will not be used by anyone else even when you do not use it at a given time.