9990: In Google offices, you can find "Machine Learning optimized cookies". At least, you could pre-COVID, dunno now. There's even a published paper on it: https://research.google/pubs/pub46507/
I used to work with the lead author of that paper. He's one of the smartest devs I know and has a great sense of humor. I'm not surprised that he would publish something like this or that he ended up at Google.