What is this new “Buy with AWS” button?

Did you know you could allow customers to subscribe to your SaaS product using a branded Buy With AWS button?
It is similar to a pay with Amazon or Google button but more geared to large-scale commercial use.
I am curious how this will affect B2B customer buying habits. Is there value in knowing your credit card is not out there and your billing can be managed all in one “trusted” place(depending on if you trust Amazon)?
Or will customers push back because their AWS bill is already difficult enough to wrap your head around?
It looks like it is only for SaaS or Software products, otherwise, I would be tempted to put one on my Consulting Page.
My guess is this is going to work best for products that are dev tools or backend software like Snowflake.
If I had not sworn off building SaaS Dev Tools, because the second I finish building a tool AWS releases their own version of it, I would be tempted to launch a dev tool and use this new “Buy with AWS” functionality.
Here is the Video Link if you want to watch me ramble.
Question for those of you running a SaaS tool:
What use cases can you think of for adding “Buy with AWS” functionality to your product?