Is CloudFront in Front of S3 Actually Worth the Extra Cost? A Clear-Sighted Engineer’s Guide

https://bizzmarkblog.com/why-temporary-urls-and-expiring-tokens-break-at-scale-lessons-from-production-incidents/

When a Growing Startup Served Static Files to the World: Sam's Story Sam worked at a two-year-old startup that hosted all front-end assets in a single S3 bucket