Huge boon to productivity when coupled with Phoenix. Moreover, it has made background jobs and all the unseen aspects of a business easily abstracted.

Knowledge collection, collation, and enrichment. Business logic.

The central business logic and ETL engine is written in Erlang.

Very nice programming language, used for backend integration.

For some internal tools like our email deliverability monitor

foundation VM for phoenix framework

language used by phoenix framework

Cowboy web server serves content

Elixir and Phoenix are awesome.

Custom plugins for ejabberd