Big Tech firms dominate the global economy. But what value do they actually produce? In this brilliant survey of global tech economy, Nick Dyer-Witheford and Alessandra Mularoni argue that the role of firms like Amazon and Google, Palantir and Uber, is in the automation of circulation. By applying digital technologies to processes of market exchange-everything from advertising and shopping, to logistics and financial services-Big Tech aims to subject these activities to the level of control and predictability that capital has secured in industrial production.

But there is a way out of the multiple crises that Big Tech has helped precipitate. If we are to break their grip on the global economy then it'll take more than just antitrust legislation or reducing individual time online. By understanding the central role Big Tech plays in contemporary capitalism, Dyer-Witheford and Mularoni argue that what is required instead is a new, ambitious and comprehensive program of democratic collective planning that can move us beyond capitalism.