What is Erlang
In this tutorial we’ll learn how-to Install Erlang on Ubuntu 14.04. Erlang is a programming language used to build massively scalabe soft real-time systems with requirements on high availability.
Erlang is being used on telecoms and banking, lately it’s also being used on e-commerce, computer telephony and instant messaging service.
Erlang’s runtime system has built-in support for concurrency, distribution and fault tolerance.
You can learn more about Erlang from Erlang website