Key Points
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Amazon generates higher total revenue than Microsoft, though the latter demonstrates a much smoother and more consistent baseline growth pattern.
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Amazon experiences distinct quarter-over-quarter revenue spikes during its fourth-quarter periods, while Microsoft maintains a steady, uninterrupted upward trajectory across all evaluated quarters.
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Investors should carefully watch whether the wide absolute revenue gap between the two companies continues to fluctuate or begins to narrow in upcoming quarters.
Amazon: Managing Quarterly Revenue Volatility
Amazon (NASDAQ:AMZN) primarily generates its revenue through a vast network of online and physical retail sales, consumer subscription programs, and enterprise cloud computing services.
It recently launched a new supply chain service and faced an investigation into its planned Globalstar acquisition, while reporting an approximately 17% net income margin for the quarter ended March 31, 2026.
Microsoft: Steady Revenue Amid Restructuring
Microsoft (NASDAQ:MSFT) earns the majority of its revenue by licensing software products, selling hardware devices, and providing extensive cloud-based solutions to consumers and global enterprises.
It recently initiated a voluntary retirement program for a portion of its workforce and faced a new antitrust investigation in the United Kingdom, while reporting an approximately 38% net income margin for the quarter ended March 31, 2026.
Why Revenue Matters for Retail Investors
Revenue serves as the most fundamental measure of total incoming money before any operating expenses, taxes, or other costs are subtracted. It allows investors to evaluate raw business growth and the fundamental demand for a company’s core offerings.
Image source: The Motley Fool.
Quarterly Revenue Comparison: Amazon and Microsoft
| Quarter (Period End) | Amazon Revenue | Microsoft Revenue |
|---|---|---|
| Q2 2024 (June 2024) | $148.0 billion | $64.7 billion |
| Q3 2024 (Sept. 2024) | $158.9 billion | $65.6 billion |
| Q4 2024 (Dec. 2024) | $187.8 billion | $69.6 billion |
| Q1 2025 (March 2025) | $155.7 billion | $70.1 billion |
| Q2 2025 (June 2025) | $167.7 billion | $76.4 billion |
| Q3 2025 (Sept. 2025) | $180.2 billion | $77.7 billion |
| Q4 2025 (Dec. 2025) | $213.4 billion | $81.3 billion |
| Q1 2026 (March 2026) | $181.5 billion | $82.9 billion |
Data source: Company filings. Data as of May 28, 2026.
Market Analysis: Cloud Computing Battleground
Amazon and Microsoft directly compete in the rapidly expanding cloud computing sector, where the former holds the leading market share position while the latter ranks as the close second. This segment represents a critical investment thesis for both companies, as it houses their emerging artificial intelligence capabilities.
While e-commerce operations remain Amazon’s primary revenue driver—explaining the pronounced fourth-quarter sales peaks driven by holiday shopping—the company’s cloud computing division, Amazon Web Services (AWS), has been the primary catalyst for its stock performance, reaching a 52-week high of $278.56 on May 5.
Amazon’s substantial AWS infrastructure investments supporting AI deployment have successfully captured significant customer demand, driving a remarkable 28% year-over-year surge in Q1 cloud sales to $37.6 billion. This segment’s explosive growth significantly outpaced Amazon’s retail division, contributing to an overall 17% year-over-year revenue increase to $181.5 billion.
Microsoft continues to demonstrate impressive sales momentum with an 18% year-over-year revenue jump to $82.9 billion in its fiscal Q3 ending March 31. Notably, the company’s AI business achieved an annual revenue run rate increase of 123% year-over-year to $37 billion during the quarter. While Microsoft’s total revenue lags substantially behind Amazon’s, its AI growth trajectory closely mirrors its key rival.
Third-quarter cloud revenue for Microsoft climbed 29% year-over-year to $54.5 billion. Both technology giants present compelling investment opportunities for investors seeking exposure to the artificial intelligence revolution.