It's easy to forget that Amazon (AMZN) was a market dog in 2014. Shares fell 22% last year.
That makes Amazon's 2015 even more impressive. Shares more than doubled. The only stock in the S&P 500 with a bigger gain? Streaming rival Netflix.
Amazon hit an all-time high this year and Bezos has finally started to silence critics who've maintained that the company can't make money on a consistent basis.
For the first time ever, Amazon broke down revenue and profits for its Amazon Web Services cloud business.
And it turns out that AWS is a powerhouse in its own right -- with sales growth of more than 70% and an operating profit margin in excess of 20%.
Bezos also showed that Christmas can come in July. The company's Prime Day shopping event was a huge financial success -- and further proof of how tough it is for Walmart, Target and other retailers to compete with it.
Related: Amazon's $160 billion business you've never heard of
