Amazon has shut down three more stores featuring its Just Walk Out technology, but the company says it remains committed to building out that technology

Amazon is selling its cashierless technology called "Just Walk Out" to outside retailers. CNBC gets a behind-the-scenes look at how the technology works.

It looks like Amazon has finally realized most people go to grocery and convenience stores to browse and shop—not to be wowed by technology. Case in point: Amazon is closing more of its futuristic cashierless convenience shops and launching mini Whole Foods stores that are comparatively low