One piece of advice: go for Erlang, not Elixir. The syntax is much nicer, and you get a really mature environment. Also, 90% of Elixir is Erlang anyway. I don'

One piece of advice: go for Erlang, not Elixir. The syntax is much nicer, and you get a really mature environment. Also, 90% of Elixir is Erlang anyway. I don't know too much about Elixir, but for implementing web services just use the tech you know the best - these days you should be able to scale almost indefinitely regardless of the stack you choose. But if you have a problem that resembles a telephone exchange (eg. no UI, lots of concurrent IO intensive - but not CPU intensive - tasks that have soft-realtime requirements) give Erlang a chance. Even if you end up using some other technology it will really influence your professional development in a good way.