What other people are saying, but also because Amazon does not want to fuck around in this space. They don't want the legal fight or the reputational damage that would come with it.

In contrast to Microsoft, OpenAI, and Anthropic, AWS has never done anything close to sneaking in unwanted training opt-outs after the fact.

They are the only ones I trust not to do that so far. And their terms are extremely clear on that, no fuzzy language. Exactly what we want to see. So we use Bedrock.

Bezos and Altman pinky-promised and are super trustworthy.

Having worked with lots of companies, I can say that trust is there. But true test is competitors of Amazon. Does Walmart use them? Ebay? Although not in exact same business.

Contracts and the force of law?

They could be lying with all this:

https://docs.aws.amazon.com/bedrock/latest/userguide/data-pr...

But it seems tremendously unlikely with how explicit they are being with it. It is clearly one of the top selling features for the service.

Contractual obligation, external third party audits, and above all, AWS’s reputation.

AWS isn’t going to risk their reputation, and thus huge chunks of their business, just so a few AI labs can get some extra training data. That’s an insane risk with zero upside for AWS. AWS knows full well they will make insane quantities of cash without breaking legal contracts with companies who pay them billions each year for infra.

they’re crap on a lot dimensions of how they treat customers but data privacy/security is one thats taken pretty seriously at AWS, perhaps owing to the massive reputational damage that would result if they played loose with it.