John Rossman helped to launch and build the Amazon Marketplace business before leading the company's Enterprise Services business during his tenure at the company. In his new book, "Think Like Amazon: 50 1/2 Ideas to Become a Digital Leader," he helps other business leaders and managers understand, learn from and adopt elements of Amazon's approach. He sat down with us this week to talk about some of the ideas that define the company, and what they say about its future.