Both are compliant. Would I recommend one over the other? AWS would be the champion that I would likely choose. I think that you'll find support and the Alteryx + AWS knowledge easier to find (Alteryx uses AWS for their own gallery).
I hope that this helps,
Alteryx ACE & Top Community Contributor
Chaos reigns within. Repent, reflect and restart. Order shall return. Please Subscribe to my youTube channel.