How to Calculate True Total Cost of Ownership for S3 at Millions of Requests Per Second

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

Which specific questions will this article answer and why they matter for engineering teams? When you operate at massive scale - millions of requests per second (RPS) - the usual talk about "cost per GB" becomes a distraction