AWS just introduced Kendra to do the same thing. They will likely suffer the same concerns. Google had a search appliance that I thought was a brilliant idea but never got much traction: https://en.wikipedia.org/wiki/Google_Search_Appliance

That's another difficulty. Even if the actual transfer is relatively painless it is a risk every time your company has given a copy of customer data to another company.

Using AWS for example all it takes is a misconfigured bucket to expose massive amounts of customer data.

We basically did that for healthcare (electronic medical records) in the mid 2000s. Our customers (actual users) loved us.

Like your enterprises, no hospital (or equiv) would consider exfiltrating their data.

So our gear was physically deployed and operated on each hospital's own system. Our marketing and sales goons called this our "federated data model", which had no tangible connection to reality.

I likened the experience to building model ships in a bottle, while wearing mittens, while someone is punching you in the face. To mitigate, we created what would now be called CI/CD pipelines. We managed 100s of deployments with near zero downtime and effortless rollbacks. I'm rueful just thinking about it.

This strategy didn't survive the 2008 economic crash.

There are multiple, mature products in the "enterprise document management" space that work similarly to the product that you describe, available on premises and in the cloud[1]. There's also (smaller, specialised) consulting companies that show how to implement these products into a business. There's some really nice features like robust OCR, meaning after scanning, you can search immediately for document metadata, like invoices numbers- for companies that insist on having paper documents as part of their processes, or crusty old management that refuses to have digital signatures.

The challenge is the same as the main topic of this thread- change management. You have to force employees to manage their documents exclusively within this system rather than dumping everything into shared drives and using Outlook attachments for everything.

[1] One example: https://www.alfresco.com/ecm-software/document-management

Google still offers an enterprise intranet search product which will index anything you let it access.

https://cloud.google.com/products/search/

Was there no self-hosted option?

> The problem they were having was no enterprise wanted to hand over an entire copy of their data for them to index.

That sounds like a reasonable response. At least, I know that would be a showstopper for me, personally.

Microsoft teams is well-positioned to do this as it is integrated with SharePoint and OneDrive. However, it's not super easy to add metadata...