In a slow-motion race of two retail behemoths, Amazon's trump card was its lucrative cloud-computing business.

The shuffle underscores the rivalry between the two retailers, particularly as Walmart expands its advertising and third-party marketplace businesses.

Amazon is bigger. But not in the way you think.

Whether they want to admit it or not, Amazon, Walmart, Kroger and other grocers engage in dynamic pricing, according to data ...

These two retail giants have been headed in opposite directions lately.

Amazon has surpassed Walmart as the world’s largest company, measured by sales, breaking Walmart’s 13-year streak at the top of the list.

Most companies that have reached a $1 trillion market capitalization have been tech companies like Microsoft and Apple.

The e-commerce giant posted $717 billion in sales versus Walmart's $713 billion, breaking the retailer's 24-year reign.

Amazon.com Inc. has officially dethroned Walmart Inc. as the biggest global company by revenue, a milestone attesting to the ...