This article quickly taught me that S3 costs are about more than just storage—they include requests, data transfer, and extra features. The author shows how to use AWS tools to estimate and break down costs, and explains how choosing the right storage class and setting up lifecycle policies can save a lot of money. Real examples and tips, like using S3 Storage Class Analysis and automating data moves, make the advice practical. I liked how easy the guide was to follow and found the cost-saving strategies very useful. This is a great, clear article for anyone using AWS S3.