Hmm, I guess I never knew how much "search engine integration" was in Firefox. I just assumed Google was configured as the default search provider and that's it

Hmm, I guess I never knew how much "search engine integration" was in Firefox. I just assumed Google was configured as the default search provider and that's it. Honest question - can someone explain to me how is this different than just changing the search provider to Bing in my current copy of Firefox? (corp PC here - can't try it out on my own now). I see other commenters saying this isn't available on Ubuntu - why not?