AWS Momentum and Cash Flow Strength Support Bullish Case for Amazon

Amazon (AMZN) is demonstrating significant momentum in its cloud computing division, with Amazon Web Services (AWS) accelerating growth as demand for AI workloads continues to outpace available capacity. In the fourth quarter, consolidated net sales rose 14% year-over-year to $213.4 billion, while AWS revenue increased 24% to $35.6 billion, marking the fastest growth pace for the segment in 13 quarters. AWS remains the primary engine of profitability for the company. In the most recent quarter, the cloud business generated $12.5 billion in operating income, representing half of Amazon's total operating income. On a full-year basis, AWS accounted for approximately 57% of the company's operating income despite contributing only 18% of total sales. While the stock's price-to-earnings ratio of approximately 35 may appear elevated, analysts argue that the price-to-operating-cash-flow ratio provides a clearer picture of value. Amazon's trailing-12-month operating cash flow rose 20% in 2025 to $139.5 billion, resulting in a price-to-operating-cash-flow ratio of about 19. The company is currently engaged in one of the largest spending cycles in its history, with planned capital expenditures of approximately $200 billion this year to support the AI boom. Although these investments will increase depreciation expenses and pressure short-term earnings, the ability to monetize capacity as quickly as it is installed suggests a strong long-term return on capital.