RAM, or Random Access Memory, is a sort of computer data storage, which allows the data to be read randomly without accessing the preceding bytes before that. This makes the RAM a lot faster than other sorts of storage devices like DVDs or HDDs where all of the info needs to be read so that you can access certain information. If you have a shared hosting account, the amount of memory which your web apps can use can't be fixed and may sometimes depend upon the free memory that's available on the physical hosting server. Using a standalone web server, however, there's always a minimum amount of physical memory which will be available at all times and will not be assigned to other customers even when it's not used. That is valid with our virtual and dedicated hosting servers.