I think it depends on how your whole stack looks. If you are running on a PAAS such as Heroku, have load balancers or are even using something like ClourFlare I

I think it depends on how your whole stack looks. If you are running on a PAAS such as Heroku, have load balancers or are even using something like ClourFlare I don’t this it’s necessary to have something in front of Gunicorn. I wouldn’t leave Gunicorn “naked” for want of a better word, or use it for static files though.