Erlang is Open source server side programming language. Which was developed under Ericsson[https://en.wikipedia.org/wiki/Ericsson] and designed by Joe Armstrong, Robert Virding, and Mike Williams. We can Able to setup Erlang from https://www.erlang.org/downloads. The first stable release of Erlang is published on 1986. Its one of common language used to develop XMPP[https://xmpp.org/] servers. XMPP is a high powerful chat protocol recently used in famous chatting applications. Erlang supports primitive data type to create variables.