We knew this day would come.

Amazon.com (AMZN -1.64%), the e-commerce juggernaut that has pioneered industries as diverse as online retail, e-books, and cloud computing, has been working toward this for ages: The day when its market value would best Wal-Mart Stores (WMT 1.32%).

Its dominance in e-commerce has gradually eroded Wal-Mart's growth, and the success of its cloud computing unit has assured investors that the company can, in fact, be profitable. Below, we take a further look at how Amazon was able to topple the big box retailer.

The next billion-dollar iSecret
The world's biggest tech company forgot to show you something at its recent event, but a few Wall Street analysts and the Fool didn't miss a beat: There's a small company that's powering their brand-new gadgets and the coming revolution in technology. And we think its stock price has nearly unlimited room to run for early-in-the-know investors! To be one of them, just click here.