I'm most fascinated by the slides on the bookmarking sites. I'd really, really like to know exactly how a bookmarking site with 3k daily users manages to rack u

I'm most fascinated by the slides on the bookmarking sites. I'd really, really like to know exactly how a bookmarking site with 3k daily users manages to rack up a $23,000 monthly AWS bill, that they only managed to reduce to $9,000. Did they try as hard as possible to split everything out among as many AWS services as possible? Yikes. I just threw up a little blog and a few tinkering sites on AWS. Looked around at a few blogging systems. Guess I coulda used Wordpress or Ghost or some other DB backed thingy and used one, or two or three, of their database services for the backend, which would probably be much more expensive and hard to maintain. Decided to go with Jekyll instead. Don't need anything but a nginix now.