I read it originally as 1M QPS, and thought that was a nice number. It was upon further inspection that I saw it was 1M QPM, and I was no longer intrigued.
I'm not sure if my org qualifies. Depends on how you count it I guess. We have 80k+ RPS at times at SendGrid, and each request can generate 4 to 8 external events and at least a dozen internal API calls. If you count total internal QPS, that would be something in the order of 80k * 4 * 12 ~= 3.8M QPS. I'd have to check with an operations person to see if that checks out. I don't know if it is fair to count this though. So, let's go back to the 80k RPS. If someone was doing 10X that, I'd be intrigued to learn more about their set up for sure. I imagine the Googles, Facebooks, and Amazons of our industry do this level of traffic.