Go Beyond the Big Revenue Number
The first number everyone sees for AWS is its total revenue, which in the third quarter of 2026 hit an impressive $46 billion. While that's a key figure, the more important metric is its year-over-year growth rate. For Q3 2026, AWS revenue grew by a staggering
39.3%. This percentage tells you how quickly the division is expanding. Analysts watch this number obsessively because it indicates whether AWS is maintaining its momentum in a fiercely competitive market. That 39% growth marked the division's fastest pace in nearly five years, signaling that demand, particularly for AI-related services, is accelerating. This acceleration is crucial because it shows the business isn't just getting bigger; it's getting stronger.
Focus on the Profit Engine: Operating Margin
Revenue is one thing, but profit is what truly defines AWS's power. The key metric here is 'operating margin', which is the operating income divided by revenue. In simple terms, it's the profit AWS makes from each dollar of sales before taxes and other corporate expenses. In the third quarter, AWS posted an operating income of about $17.8 billion, giving it a robust operating margin of 38.7%. To put that in perspective, Amazon's North American retail business had a margin of just 7.7%. This massive difference is why AWS, which accounts for less than a quarter of Amazon's total sales, generates around 63% of the entire company's operating profit. A high and stable margin shows AWS has pricing power and can manage its costs effectively, even while growing at a breakneck pace.
Context Is King: How Does It Stack Up?
AWS doesn't operate in a bubble. To truly understand its performance, you have to compare its growth to its main rivals: Microsoft Azure and Google Cloud. In the same third-quarter period, Microsoft's Azure grew by 48% and Google Cloud grew by a stunning 103%. While AWS is still the largest player by far with $46 billion in sales, compared to Azure's $33.2 billion and Google Cloud's $30.7 billion, the faster growth rates of its competitors are a critical part of the story. Analysts watch this 'growth spread' to gauge market share shifts. Is the competition catching up, or is the market, now supercharged by AI, simply big enough for all three to thrive? For now, the answer seems to be the latter, with the entire cloud infrastructure market growing 55% year-over-year.
Follow the Money: Capital Expenditures
A more advanced move is to look at capital expenditures, or 'capex'. This is the money Amazon spends on physical assets like data centers and servers. In Q3 2026, Amazon's capex was nearly $76 billion. A huge portion of that is dedicated to building out AWS infrastructure to meet soaring demand, especially for AI. While this heavy spending can weigh on shortterm free cash flow, analysts see it as a critical investment in future growth. Amazon's CEO has even stated that capex will increase 'meaningfully' in 2027 to keep up. When you hear executives justify massive spending by pointing to a backlog of customer contracts that has grown to over $578 billion, it tells you they are building for demand they are confident is already there.
Listen for the 'Color Commentary'
Finally, the numbers only tell part of the story. The real insight often comes from the earnings call, where executives like CEO Andy Jassy add context. In the latest call, Jassy noted that 'almost as fast as we install capacity, customers are gobbling it up'. He also projected that AWS could maintain growth rates above 40% in 2027 and 2028. This kind of forward looking statement is what analysts use to model future performance. Comments about the demand for specific services, like AI platforms, or the profitability of new custom chips, provide the qualitative 'color' that helps explain the quantitative data and predict where the business is headed next.
