Amazon shares slide as weak revenue, AI spending rattle investors

1. Amazon's Q4 sales surpassed estimates by reaching $187.8 billion. 2. AWS revenue grew 19% to $28.79 billion, missing estimates slightly. 3. Retail sales increased by 7% to $75.56 billion, outperforming expectations. 4. Net income nearly doubled to $20 billion from $10.6 billion last year. 5. Advertising revenue rose 18% to $17.3 billion, slightly below forecasts.