So this is a a sample of the reason why I like Elixir (or Erlang). Your 'traditional' microservice architecture, running on Google/Amazon/Azure infrastructure,

So this is a a sample of the reason why I like Elixir (or Erlang). Your 'traditional' microservice architecture, running on Google/Amazon/Azure infrastructure, using lots of their pieces is very hard to test in an end to end way and you've got no chance of running it up locally. Kubernetes provides an abstraction layer that improves this but it's not perfect. Even a Django framework probably has a load of workers doing stuff off process. In Elixir, what you've got is a lot of Elixir. Sometimes you need other external services and there's some work there, but you can often get a surprising amount of your system in one codebase, running on one more instances of the VM. It makes testing SO much easier.