Sometimes, the best stock buys are hiding in plain sight. shares, for example, gained 1,000% in the past decade, even though the company was already an entrenched software leader back in 2014. It relied on competitive advantages, like its economies of scale and valuable brand, to reach today's massive $3 trillion market capitalization -- likely creating many millionaire shareholders along the way.

Amazon's (NASDAQ: AMZN) business could follow a similar path. The company has a long growth runway ahead in core sales divisions like e-commerce and cloud services. Profit margins appear likely to rise significantly over the next decade, as well. Let's look at how these factors might make the stock a screaming-buy opportunity today.

Owning Amazon gives you exposure to two massive global growth niches: e-commerce and cloud enterprise services. The retailing segment is the less exciting of the two but is performing well. It recently set a holiday season sales record on accelerating growth.

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Source Fool.com