For most of this year, Amazon.com Inc. (NASDAQ: AMZN) faced a single, nagging question: was its colossal spending on artificial intelligence (AI) ever going to pay off? At the start of this week, the market delivered its verdict in the most emphatic way imaginable, as the stock touched a fresh all-time high and powered past a $3 trillion valuation for the first time.
That milestone puts Amazon in rarefied territory as one of only five U.S. businesses ever to cross the threshold.
