i met omid khorasani. omid and i hit it off.e introduced me to larry and sergey, who happened to be visiting europe the week after. i spent an hour walking around the british museum with sergey. then he and larry invited me to come to california. i spent time meeting many people, many of them you know, eric schmidt, sheryl sandberg, tim armstrong. and that was it. emily: google had just gone public, but the business model was still to be set in stone. nikesh: the business model was pretty robust. google was around doing $2 billion in revenue at that point in time. but i would say that the international operations and scaling was still very early. tim armstrong did a great job, because the team he ran was doing really well and he already put that into place. we took the model that he built and deployed it across europe. tim and i used to compete on how big can we make the different regions grow to. emily: google has since become alphabet, dominates the online ad market. what do you see as the biggest risk to google's business mod