I intern at a security company and half of our office (including me) runs some kind of a Linux distribution. I got Ubuntu on the company-assigned computer.

Most logistics companies in my country run on browser so if it is the same in Italy it shouldn't be too hard to switch

LibreOffice replacing the commercial office suite.

how to open and save documents in LibreOffice, how to access files on Nextcloud,

Also recommend them to follow the office suites nagging and save future documents in Open Document Format. Because OOXML (.docx & co.) is the villain here in compatibility and formatting issues.

Is the OOXML apart of the Embrace, Extend, Extinguish that Microsoft is so well-known for?

At work we have been slowly pushing into Linux instead of traditional IIS/windows servers. Its SO much easier to deploy images/docker containers. Licensing is sane. The costs are slowly going down.

Define "link". Microsoft has lots of good enterprise connectivity tooling. You lose most of that if you don't use Windows.

It doesn't mean it's a complete loss. There are benefits to moving away.

I feel like most enterprise software has moved behind a browser because windows sucks.

Of course, the rest is in java.

Yes the Microsoft ecosystem does have much better spyware options if that's what you want

No, because EEE is about killing existing competing standards. OOXML came out of microsoft themselves.