Meaning -Alias is a name assigned tot an entity for the purpose of an assignment, such that the original name of the entity is unused and confidential. In the general sense, an alias is used by a person, when he/she is online and they use a new name that is unlike their real one, in order to keep their true identity as secret.
In the world of serves, an alias is a name assigned to a server that makes the server independent of the name of its host machine. One thing to remember is that the alias must be defined in the domain name server.
Many organisations use aliases for their servers in order to maintain a level of secrecy and security, from people within and outside the organisation.