It’s not binary. With AWS previously you have contractual guarantees with a third party, that’s been in business for a couple decades, which explicitly state zero seconds of data retention - only as long as needed for inference.

Consider the security angle too. You now have to rely on Anthropic’s infrastructure security. You did not previously when you used Bedrock/Vertex/etc.

And blindly trust thousands of unknown python developers?

The only way to really be sure is to build it from scratch starting with your own silicon wafers.

But for those who are a little more pragmatic, AWS has a good track record of fulfilling their promises.