RAM, or Random Access Memory, is a sort of computer data storage, that allows the information to be read randomly without accessing the preceding bytes before that. That makes the RAM a lot quicker than other sorts of storage devices such as DVDs or HDDs where all of the info has to be read so as to access specific data. If you have a shared hosting account, the total amount of memory your web apps can use can't be fixed and may regularly depend on the free memory that's available on the physical web server. With a standalone hosting server, however, there is always a minimum amount of physical memory that'll be available at all times and shall not be allocated to other clients even if it isn't being used. This is valid with our virtual and dedicated hosting servers.