I also went this route, but am keeping the infrastructure simple in order to minimize lock in. It has been super productive but also I've spent years using elixir professionally and unprofessionally so I'm comfortable with it. The nice thing is that the elixir ecosystem is so robust you don't need to get locked into whatever cloud provider solution is in vogue at the moment. Also, we got a pile of cloud credits from different providers, and intend to use them :)