Comment by AyyEye
> The author is seeing requests from rotating residential IPs and changing user agent strings
This type of thing is commercially available as a service[1]. Hundreds of Millions of networks backdoored and used as crawlers/scrapers because of an included library somewhere -- and ostensibly legal because somewhere in some ToS they had some generic line that could plausibly be extended to using you as a patsy for quasi-legal activities.
Yes, we know, but the accusation is that Amazon is the source of the traffic.
If the traffic is coming from residential IPs then it’s most likely someone using these services and putting “AmazonBot” as a user agent to trick people.