Manfredi Sassoli de Bianchi continues his conversation with Marketplace Risk's Elle Tucker about platform strategy, this time focusing on the ‘war’ between the big platforms that he chronicles on his LinkedIn feed, who are all jostling for position in the e-commerce world. Elle and Manfredi explore what it means when social media platforms start playing in this space, and ponder on how long Amazon will reign supreme in the world of digital shopping. What do these shifts mean for marketplaces?