[ednxzu]

https://github.com/hashicorp/vault/blob/main/LICENSE#L8-L11

Clearly states that you can use it in a production setup.

[INTPenis]

Thanks for pointing that out, so this must have been added by Hashicorp then.

[ezekg]

That's the point of the BUSL. It defaults to non-production, use, but the licensor adds an Additional Use Grant that allows production use, which typically covers everything except competing with the licensor's cloud offering.