Few could have predicted how quickly the cloud market has evolved over the last six years. In a 2011 report, Bain & Company found that companies selling cloud-based products and services were struggling to define how they would make money. Today, the firm estimates that revenues for public and private cloud hardware, software and services amount to $180 billion, or 16% of the $1.1 trillion enterprise IT industry. The market, once driven by small start-ups and mid-size businesses, is now dominated by late adopters, who make up the fastest and largest growing segment of cloud consumers. This is according to the 2017 version of Bain's research, The Changing Faces of the Cloud.