The audio version of Greylock general partner Jerry Chen's essay introducing Castles in the Cloud, which is Greylock’s interactive project to map multiple data points of the cloud computing ecosystem — and plots new opportunities for success. Greylock marketing partner Elisa Schreiber reads the essay. You can read the essay at greylock.com/greymatter/castles-in-the-cloud/, and find the entire project at greylock.com/castles. Chapters 0:00 Introduction 1:41 The Big Three Cloud Castles 2:53 Opportunities on the Ground 4:07 A New Way to Rule