What exactly is "AI data"?

[Phillip C]

In relevance to Understand data residency | Atlassian Support what exactly is "AI data"?

I can't find any definitions or further understanding to what this term means.

An official answer/resource would be great, as this is for company data compliance. We can't attest to data being held in a region for a feature (ai/rovo) when there is no understanding provided to what data it holds.