RAM, or Random Access Memory, is a kind of computer data storage, that enables the info to be read randomly without accessing the preceding bytes before that. That makes the RAM considerably quicker than other sorts of storage devices including DVDs or HDDs in which all the data must be read to be able to access specific information. If you have a shared hosting account, the amount of memory that your web apps can use can't be fixed and may regularly be determined by the free memory which is available on the physical hosting server. When using a standalone web server, however, there is always a minimum amount of physical memory which shall be at your disposal at all times and won't be allotted to other clients even if it isn't in use. That's valid with our virtual and dedicated web servers.