While Microsoft does sell their own SAP competitor they actually use SAP for their main accounting.

https://www.erpsoftwareblog.com/2012/11/why-does-microsoft-h...

I'm pretty sure I've seen job adverts from Google for people with experience of Oracle Hyperion.

What would be the point of Google writing their own financial consolidation software?

You'd think so... I thought so once... but again, perhaps not necessarily - ERP is NOT their core competency.

I.e. HR & Payroll legislative rules and best practices, business & organizational process transformation etc, are not what Google Engineers and IT necessarily have experience in, and if they allow hubris to override that fact, it might not go great.

Internets indicate that Google uses Oracle, Apple uses SAP.

This info may be outdated - for example, Facebook claims they built their own ERP just recently; I do wonder what that "backend database" part is though, or how much HR/Pay/Finance, as opposed to inventory/datacentre management, is custom: https://techcrunch.com/2019/08/15/how-facebook-does-it/

I work for a large healthcare company. My point is not whether we use it (as another poster pointed out we apparently use a product that was acquired by SAP), it’s that lots of people might not know all of the business software that is used for various reasons.

How many more letters are we going to add to this acronym?