I figured somebody has done this before. I purposely did not look for it to keep my findings unbiased. It was fun clicking on random services and tweak with it until figuring out what it was for and how to use it (and actually see some results)
New Azure services tend to have names like "Cognitive Services Speech" or "Cognitive Services Image Recognition" or "Azure Stateful Functions"... There's not a lot to riff on.
Azure: https://web.archive.org/web/20190321175020/https://www.exped...
https://news.ycombinator.com/item?id=13442597
AWS: https://expeditedsecurity.com/aws-in-plain-english/
https://news.ycombinator.com/item?id=10202286