We do have an internal Google at my place of work. It is called "Bing for business" and i will assume that many companies are using that too.

Here is a old article about what is

https://blogs.bing.com/search/2017-09/finding-what-you-need-...

Edit: I am not the sysadm and Bing for Business might have changed name since the article i linked to was written but we definitely have a "internal Google" that makes information across all our internal properties searchable when using bing.com

Note that elastic has an offering called "Enterprise Search".