RAM, or Random Access Memory, is a form of computer data storage, that allows the info to be read randomly without accessing the preceding bytes before that. That makes the RAM significantly quicker than other kinds of storage devices such as DVDs or HDDs where all the information must be read in order to access particular data. In case you have a shared hosting account, the amount of memory which your web applications can use cannot be fixed and may regularly depend on the free memory that is available on the physical hosting server. With a standalone web server, however, there is always a minimum amount of physical memory which shall be available at all times and will never be assigned to other customers even when it isn't being used. That's valid with our virtual and dedicated servers.