The Hidden Growth Engine Inside Amazon No One Is Talking About

Amazon's advertising business is rapidly emerging as a significant growth driver, with Q3 revenue reaching $17.7 billion, a 23.5% year-over-year increase that outpaced both AWS and overall company growth. This segment, benefiting from Amazon's vast ecosystem and high margins comparable to AWS, is significantly bolstered by the ad-supported Prime Video, which now boasts 315 million monthly viewers globally, exceeding Netflix's ad-tier reach. Despite representing less than 10% of total revenue, its accelerating growth rate and substantial contribution to operating income position it as a key component of Amazon's long-term investment thesis.

Analysis

Amazon's advertising business is rapidly emerging as a significant growth driver, posting Q3 revenue of $17.7 billion, a 23.5% year-over-year increase. This acceleration outpaced AWS's 20% rise and the company's overall 12% revenue growth, marking its third consecutive quarter of increasing growth rates. Analysts project Amazon's global ad revenue to surpass $60 billion for the full year, up 18.6% from 2024.

A key contributor to this expansion is the ad-supported Prime Video, which now reaches 315 million monthly ad-supported viewers worldwide, significantly exceeding Netflix's 190 million ad-tier viewers. The advertising segment leverages Amazon's vast ecosystem for targeted ads, yielding high returns and margins comparable to AWS due to minimal incremental costs. This segment's growth is bolstering both top-line expansion and bottom-line strength.

Despite representing less than 10% of Amazon's total Q3 net sales of $180.2 billion, the advertising unit's rapid expansion directly contributed to driving operating income to record levels. This positions Amazon to capture a larger share of the rapidly growing streaming ad market, leveraging its bundled Prime benefits and extensive user base. The segment adds a crucial layer to Amazon's long-term investment thesis.

Key Decisions for Investors

• Monitor Amazon's advertising revenue growth and Prime Video ad-supported viewer metrics as key indicators of future profitability and market share expansion.
• Evaluate AMZN's long-term investment thesis, considering the high-margin advertising segment as a significant, underappreciated contributor alongside e-commerce and AWS.
• Assess the competitive landscape in streaming advertising, noting Amazon's scale advantage over competitors like Netflix in ad-supported viewership and its potential to capture more ad dollars.