Why you need a Reserved Instances Czar
blog.cloudability.com/why-your-org-needs-a-reserved-instances-czar
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
If you’re spending more than $100k a month on AWS, it’s about time you appointed a Reserved Instances czar.