Everyone talks about Amazon's retail empire and AWS dominance, but the real money maker is flying under the radar. The company's advertising segment just posted a brutal 25.82% two-year CAGR, absolutely destroying the growth rates of its more famous business lines.
The Numbers Don't Lie
As Qualtrim pointed out, this isn't just impressive - it's reshaping Amazon's entire revenue story. What started as a side hustle is now the main event.

- Five-year explosion: Advertising revenue nearly quadrupled from Q4 2020 to Q2 2025, hitting over $60 billion annually
- Recent momentum: 19.23% growth in the past year alone
- Two-year dominance: 25.82% CAGR crushes both retail and cloud growth
This isn't a fluke - it's Amazon's fastest-growing revenue stream, and it's not even close.
Why Ads Are Amazon's Secret Weapon
Amazon cracked the code that Google and Facebook couldn't. They're hitting customers right when they're ready to buy, not when they're scrolling through cat videos. Their sponsored product ads blend seamlessly into search results, making them feel natural rather than intrusive. Plus, unlike selling toilet paper with razor-thin margins, advertising money goes straight to the bottom line. It's pure profit compared to the brutal economics of retail.
The market's still catching up to this reality. While everyone obsesses over AWS growth rates, advertising is quietly becoming Amazon's most profitable division. This shift could drive serious margin expansion and force analysts to completely rethink their models. Amazon's not just building a better mousetrap - they've created an advertising ecosystem that's nearly impossible to replicate.