I started this part of the thread and mentioned Trainium but the person you replied to gave a link. Follow that and you can see Amazon's chips that they designed.

Amazon wants people to move away from Nvidia GPUs and to their own custom chips.

https://aws.amazon.com/ai/machine-learning/inferentia/

https://aws.amazon.com/ai/machine-learning/trainium/

TBH I was just going off of that I've heard AWS is a terrible place to get h100 clusters at scale. And for the training I was looking at we didn't really want to consider going off CUDA.