Net neutrality is defined as "the principle that Internet service providers should enable access to all content and applications regardless of the source, and without favoring or blocking particular products or websites."
This is a good thing. It means that ISPs like Comcast and Spectrum can't pick winners and they can't charge you a different rate for using Twitter than they charge for using Facebook. There are no anti-competitive "fast lanes."
It also has nothing to do with the Title II regulations that the FCC has recently voted to repeal. That statement will probably surprise people.
A few days ago James Damore was fired from Google for writing a memo that was initially circulated internally but ended up leaking to the press. I suggest reading the whole thing but reading the "Reply to public response and misrepresentation" and the tl;dr, and skimming the rest is fine for now.
I mainly just want to address the public statements Google has made since it was leaked. First though, I need to emphasize the chart that Gizmodo (the most popular place to view the memo) intentionally omitted from their post. It's also worth noting they removed all the references (which are included in the pdf I have linked above).