As we stated at the beginning of this chapter, Elixir targets the Erlang runtime. Elixir is compiled to byte-code that can run on an Erlang VM (or BEAM), and Erlang libraries can be used in your Elixir projects (and vice versa). The philosophy in the Elixir community is to not reinvent the wheel and directly use Erlang libraries when appropriate. The creation of Elixir libraries that simply wrap an underlying Erlang library is discouraged, as you can directly call an Erlang library from your Elixir code.
We can take advantage not only of Erlang libraries, but also of their tooling. For instance, Erlang ships with a tool called Observer, which allows you to monitor your server and provides you with tons of useful information ...
