[9nGQluzmnq3M]

I would presume AWS is so large these days that Amazon retail's infra is only a small fraction of the fleet?

Published data on their scale is thin on the ground, but this post from 2017 guesstimated that they had 4 million physical servers at the time, and AWS certainly hasn't shrunk since then:

https://blog.sqlizer.io/posts/facebook-on-aws/

[1592343403]

Amazon retail's total combined capacity usage can on most days fit entirely into the spare capacity that AWS keeps available for spot and burst usage by other customers

[boredpudding]

This article is about how much profit from Amazon comes from AWS. Not how big of a 'client' Amazon is in AWS itself.

[thenaturalist]

Well, if you read the parent comment here again, I hope you can understand that "how big of a 'client' Amazon is in AWS itself" is _precisely_ about estimating profits for AWS.

The fact that Amazon is self-serving AWS resources is obfuscating profit calculations or estimates as there is no way of determining ROI on assets Amazon consumes itself - most likely in a somewhat shared model together with other, actually paying customers.