Lateral movement here is really easy. But I'm at a smaller Google office, which limits the options I have for other teams without moving to a different location.

EDIT: I ranked location over product area when I picked where to interview, and I'm still happy with my choice. I ended up in payments, which I was not thrilled about when I started, but I've come to enjoy it. There are lots of technical challenges when you are dealing with the payment volume Google moves.