Amazon Just Hit a Major Milestone That You Don't Want to Ignore

Amazon (AMZN -1.65%) surprised investors last week with its underwhelming first-quarter guidance. The stock fell, but it's already on the rebound as smart investors see beyond somewhat disappointing quarterly guidance. After all, there was a lot to love about the quarter, and even more to love about how Amazon is leveraging its dominant position in cloud computing to boost its artificial intelligence (AI) business.Between all the talk about AI and guidance, there was an important milestone Amazon reached th ...