Better buy: Amazon.com vs. Google

This article was originally published on Fool.com. All figures quoted in US dollars unless otherwise stated.

Amazon.com Inc (NASDAQ: AMZN) and Alphabet Inc (NASDAQ: GOOG) (NASDAQ: GOOGL) are two of the largest and most successful companies in the world. Google has become synonymous with search, and Amazon’s marketplace is the epitome of consumer convenience. And both of these titans have outperformed the S&P 500 Index (SP: .INX) over the last one, three, five, and 10 years — though Amazon’s stock soared 815% over the last decade, far outpacing Alphabet’s 235% gain. Which stock is the better investment today?

E-commerce and digital advertising

Alphabet’s primary source of revenue comes from its Google business, specifically…