RAM, or Random Access Memory, is a form of computer data storage, which enables the info to be read randomly without accessing the preceding bytes before that. This makes the RAM a lot quicker than other sorts of storage devices such as DVDs or HDDs where all of the data has to be read in order to access certain info. If you have a shared hosting account, the amount of memory that your web apps can use cannot be fixed and may regularly depend on the free memory which is available on the physical web server. When using a standalone web server, however, there is always a minimum amount of physical memory which will be at your disposal at all times and will never be allotted to other customers even if it's not used. That is valid with our virtual and dedicated servers.