Amazon shares jumped more than 12% before the bell on Friday after the e-commerce and cloud giant posted its strongest cloud growth in over ‌four years, bolstering investor confidence that its multibillion-dollar AI bets are driving a ‌fresh wave of demand. The rally put Amazon on track to add about $300 billion in market value, as investors looked past ​a 10% increase in planned capital expenditure to $220 billion and instead focused on booming demand at Amazon Web Services (AWS), the profit engine at the center of the company's AI push. The reaction was in sharp contrast to Alphabet's earnings last week, when the Google-parent's shares stumbled after it reported its ‌first negative cash flow, which stemmed ⁠from rising AI-related spending.