Just in case, I already setup an express backend with a sql db, but was wondering if I truly need it. I want to incorporate React on the front-end, but I want to make a site for my girlfriend for her art. It will be a typical CRUD for her to post her art and have people buy the pieces over the internet. Can it just be done on a front-end sending people to PayPal? Can you guys give me ideas as to why I need a full stack or not?
EDIT: I want at least auth or possibly OAUTH on her admin sign-in to CRUD the data.