AWS re:Invent 2019: Better, faster, cheaper compute: Cost-optimizing Amazon EC2 (CMP202-R1)
Why the open web links it
Explains how to cost-optimize Amazon EC2 using Spot, On-Demand, and Reserved Instances.
Linked by 2 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including amazon.com, classmethod.jp.