Amazon has three people who hold the title of CEO. There's Jeff Bezos, the founder and CEO. Then there are two deputies: Andy Jassy, the CEO of Amazon Web Services, the cloud business. And Jeff Wilke, CEO of global consumer. 

Jeff Wilke got the title CEO of global consumer three years ago, and hadn't done a broadcast interview since – until this week, when he sat down with me for CNBC. Wilke's been with Amazon for 20 years, and now runs the core business of e-commerce and physical retail. The massive global logistics operation, the billions of items shipped – all that reports up to him. 

I talked to Jeff Wilke in Las Vegas at Amazon's first re:MARS event; MARS stands for machine learning, automation, robotics and space. Later on in his keynote, Wilke gave an update on Amazon's plan to deliver packages by drone. He didn't spill the beans on that plan in this interview, but he does talk about Amazon's ambition to keep delivering Prime packages faster and faster – in even less than a day. 

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