joining us from new york, matt townsend. tell us how this partnership is actually going to work. t is going to be selling its products, the first time it has sold outside of its own universe, through google express. you have a google assistant at home, a voice-activated device. you could say "i need more toilet paper," for example, and the order would go directly through the google system and you would get toilet paper shipped to you from walmart. emily: google express has had its stumbles. there are other vendors on the service, target, costco, bed bath & beyond. arun, how big of a threat is this to amazon? arun: i think it's a really big threat. you're combining the ai and device power of google with the logistics and retailing expertise of walmart. i think it's a win-win for both walmart and for google. you look at the online retail landscape, look a few years ahead, and there doesn't seem to be anybody who poses a serious threat to amazon. when you combine google's strengths with walmart's strengths, it's still really early days for online retail. less than 10% of u.s. retail