When they ask - "You should know AWS" - what do they really mean?

AWS is such a massive topic - they couldn't possibly expect a candidate to be like a AWS Architect or something, is it?

Personally, my experience with AWS was that my client had their Jupyter notebooks synced with Bitbucket and S3 buckets. So at max, I can claim that I know something about AWS Sagemaker and S3. But that's not really true.

So what does an aspiring data scientist ought to do or mention in their resume?

aws bitbucket client datascience experience jupyter jupyter notebooks massive max mean notebooks something