The Giant AI Race Between Amazon and Microsoft: Growth Strategy with a $25 Billion Bond

Technology giants like Amazon and Microsoft are turning a new page in the Mag 7 (Magnificent Seven) competition with their massive investments in artificial intelligence infrastructure and highly distinct financial strategies. Both companies revealed, with the financial results they announced on 29 Nisan 2026, that they finance their AI moves in different ways. While Amazon pursues a strategy based on its custom-developed chips and a $25 billion multi-tranche bond sale, Microsoft relies on its partnership with OpenAI and its contractual order volume. It is clear that both companies are driven by the same technological wind, yet they have chosen completely different paths in terms of balance sheets and business models. This situation clearly demonstrates how the AI revolution is shaping the biggest players in the global economy.

On the cloud computing side, the two giant companies achieved unprecedented growth momentum, but Microsoft's Azure service managed to stand out by making a significant leap. Amazon's AWS unit generated $37.59 billion in revenue with a 28% increase, the fastest growth rate in the last fifteen quarters, and reached a very high operating margin of 37.7%. Additionally, Amazon's advertising revenues surpassed $70 billion, proving to be a second strong growth engine for the company. Meanwhile, Microsoft increased its revenue by 18.3% to $82.89 billion, and Azure's growth stood at 40%. The company's AI business reached an annual run rate of $37 billion with a 123% year-over-year increase, and its commercial contracted obligations nearly doubled compared to the previous year, rising to $627 billion.

The competitive strategies of the companies are also evident in the fundamental differences in their hardware and infrastructure approaches. Amazon CEO Andy Jassy announced that the company's custom chip business reached an annual volume of $20 billion with a growth rate exceeding 100%, which would save them tens of billions of dollars in capital expenditures annually. Gigawatt-scale massive deals made with major AI firms like Anthropic and OpenAI reinforce Amazon's ambition and power in this field. Microsoft, on the other hand, bases its strategy more on externally sourced NVIDIA chips and its close ties with OpenAI. Although this approach has been extremely profitable for Microsoft under the leadership of Satya Nadella, it is seen that they lack the flexibility and alternative diversity in chip supply that Amazon possesses.

This massive AI investment race is also manifesting as an increasing cost and debt burden on the companies' financial statements. Amazon's trailing twelve-month free cash flow plummeted by a surprising 95% down to $1.2 billion, and its long-term debt surged from $65.6 billion to $119.1 billion. Forecasting markets and analysts state there is a high probability that Amazon's capital expenditure in 2026 will exceed $200 billion and could even reach $220 billion. On the Microsoft side, capital expenditures also increased by a significant 84.39% compared to the same period of the previous year, though the company management avoided providing specific numerical forward guidance on this matter. All these massive expenditures raise significant questions among market experts regarding how cloud computing margins will be affected in the future.

Following the announcement of the financial reports, the shares of both companies failed to attract the exact level of interest expected from investors; while Amazon's shares lost 6.49% of their value, Microsoft shares experienced an 8.19% decline. However, according to analyses, Amazon's ability to borrow cheaply at the corporate level and its chip ecosystem, which customers are already purchasing on a gigawatt basis, position the company favorably in this competition. Furthermore, the company's core operating income continuing to grow by 29.6% remains one of the critical factors solidifying Amazon's investment structure. Microsoft continues to be a stable and high-quality investment target with an incredible operating margin of 45.6%; however, for analysts who argue that the real fortress of this cycle is custom chips, Amazon stands out as a more attractive commercial strategy.