I use it mostly for web APIs / services, it's great for that!

Interop is not seamless since Elixir does not have the same static type system, but it is possible and that does help sometimes. When resizing images for example, I fall back to Elixir's bindings to libvips. I've also used Oban from Gleam in the past.

It's a general purpose programming language, like OCaml, Python, or Scheme. It's not intended for any specific business domain.