OP and founder of interviewing.io here. We spent hundreds of hours interviewing current & former FAANG interviewers to write this piece. We really wanted to peel back the curtain on what happens during these interviews, what actually matters to them, how these companies train their interviewers (if at all), make hiring decisions, and so on.

I'll be around to answer questions, and I'll tag in Kevin, the author, as well (I just edited it).