Between MS Fabric and all the other MS cloud products, MS Purview now seems to integrate into all of them.

Yes it has a business glossary and lineage. That's not as important as their security related features. The ability to do things like rules and fuzzy matching for classification purposes.

It can do this across all MS products, including unstructured things like MS Outlook, MS SharePoint, MS Word, MS Excel, etc.

Being able to collect data from Purview should allow for pulling of classification information. It could also serve as a way to double check where documents are located.