Amazon reported a 35% jump in quarterly profits, driven by investments in artificial intelligence, but its profit outlook for the current quarter was lower than expected due to concerns over the cost of AI. The company's share price fell 6% after hours trading despite exceeding analyst expectations and posting strong sales growth. Amazon's Chief Executive Andy Jassy attributed the results to the expansion of Alexa+ service and new AI shopping agents, while also citing a shift in consumer behavior towards AI-powered experiences.