This was also just announced today
https://github.com/plataformatec/broadway
I think if you look at the amount of good available options in the ecosystem as you have listed, it’s clear there is a need for background job queues with a lot of different ways to tackle it. I typically lean towards SQS because it’s cheap, durable, at least once deliverability, widely supported, and it’s managed. (… it can also trigger lambdas.. 
). My interest in elixir has made me take a deeper look at RabbitMQ. In addition to the obvious purpose as a queue, I like to think of a background job queue as message passing in a language/application agnostic way. i.e.
It makes it easy to introduce new services/technology such as migrating to elixir or use a more fitting technology based on the queue.
90% of our needs for a background job processing system is image processing.
) defined the difference in 
