Originally published 2020. Rebuilt Jul 22, 2026. Part of EPR's Paid Media and Retail & eCommerce coverage.
Amazon Ads is a $56.2 billion business. In 2024 it grew 20% year over year and closed the year as the third-largest digital ad platform on earth — behind Google and Meta, ahead of everyone else. Six years after this piece originally speculated about Amazon's advertising trajectory, the trajectory has arrived. Amazon owns retail media. The Google-Meta duopoly is now a triopoly.
By EPR Editorial Team.
The Numbers That Rewrote The Ad Landscape
- Amazon Ads 2024 revenue: $56.2B, up ~20% YoY (Amazon 10-K, 2024).
- Amazon's share of U.S. digital ad market: ~13% in 2024, up from 9% in 2020 (eMarketer).
- Google's share: ~26%. Meta's share: ~22%. Amazon closed a third of the gap in four years.
- Amazon Ads operating margin: Estimated ~60-70% (Amazon does not disclose separately; retail media generally runs higher-margin than search or social).
- Prime Video ads launched: January 2024 — instantly the largest CTV ad inventory outside of Netflix.
- Sponsored Products share of Amazon Ads revenue: Still >75% per most analyst estimates. Sponsored Brands, Sponsored Display, and DSP make up the rest.
Four structural advantages did the work.
Closed-loop attribution. Every other ad platform measures ad exposure and purchase outcomes on separate identity layers stitched together with probabilistic modeling. Amazon does both inside its own logged-in shopping session. When a Sponsored Products ad drives a purchase, Amazon knows — with certainty, not modeling — that the ad drove the sale. Post iOS 14.5 and Chrome's cookie deprecation trajectory, this is the single most valuable measurement capability in digital advertising.
First-party shopper data. Amazon holds purchase history and search behavior for ~200 million Prime households globally. Google knows what you searched. Meta knows what you liked. Amazon knows what you bought — and knows it across billions of SKUs and years of history. For CPG, beauty, electronics, household goods, and pet, that data is worth more than Google's or Meta's.
The buyer is already there. ~60% of U.S. consumers now start product searches on Amazon rather than Google. The Sponsored Products ad captures the buyer at the exact moment of transactional intent — with no click-through friction, no landing page decay, no cart-abandonment risk. It's the highest-intent ad surface in the industry.
Off-Amazon expansion. Amazon DSP and Sponsored Display now serve inventory across third-party publishers, Twitch, IMDb, Freevee, and — since January 2024 — Prime Video. The platform is no longer just an on-site retail ad play. It's a full-stack ad network with Amazon's identity graph running underneath.
What The Duopoly Compression Actually Looks Like
Google and Meta together held ~55% of U.S. digital ad revenue in 2020. Both still grew in absolute dollars through 2024 — but their combined share dropped to ~48%. Amazon absorbed most of the delta.
What Google lost: Product Listing Ads and shopping search share. Buyers who used to Google a product and click a Google Shopping ad now bypass Google entirely and start on Amazon. Google's retail ad revenue growth flattened while Amazon Sponsored Products compounded.
What Meta lost: Direct-response CPG ad spend. Post-iOS 14.5, Meta's attribution capability degraded. Amazon's closed-loop attribution didn't. CPG brands running performance ads to drive Amazon sales realized they could skip Meta and buy Sponsored Products directly — same buyer, better measurement, no attribution guesswork.
What TikTok is doing to all three: TikTok Shop launched U.S. in September 2023 and is building the same closed-loop model Amazon perfected. TikTok Shop is nowhere near Amazon's scale but is growing fastest in the category. The 2020s advertising story is retail media absorbing traditional digital ad spend, and TikTok is the second-order chapter.
The Category-Level Reality
CPG. Amazon Ads is now the largest single ad line item for most mid-tier CPG brands. Unilever, P&G, and Nestlé have all publicly disclosed increasing Amazon Ads investment across recent earnings calls.
Beauty. Amazon Ads spend correlates directly with Amazon retail share. The prestige-beauty brands (Estée Lauder, Charlotte Tilbury, Sephora private label) that resisted Amazon distribution for years are now on the platform because the ads-plus-shelf combination outperforms the alternative.
Consumer electronics. Amazon is the primary discovery surface. Sponsored Products has replaced Best Buy circulars as the tactical ad unit.
Pet. Chewy at $11.9B in fiscal 2024 revenue is the structural anchor of the pet retail category, but Amazon Ads is now the second-largest pet ad channel after Chewy's own on-site advertising.
Household goods. Sponsored Products is the tactical ad unit that replaced the retailer end-cap.
What The AI Communications Category Should Take From This
Four operating implications for brand and communications teams.
Amazon Ads is no longer optional. Any consumer brand selling on Amazon needs to run Sponsored Products at a minimum. The Bank of America 2024 CFO survey found 78% of consumer-goods CFOs consider Amazon Ads a mandatory line item.
Closed-loop measurement is the new baseline. Buyers now compare Amazon Ads ROAS directly with Meta and Google ROAS. Amazon's attribution advantage means the comparison is often unfair to Meta and Google — but the comparison is being made anyway. Communications teams should be equipped to explain the measurement asymmetry rather than losing budget arguments by default.
Retail media is compressing the whole media plan. Walmart Connect ($4.4B ad revenue in 2024), Target Roundel, Kroger Precision Marketing, and Instacart Ads are all building the Amazon model at smaller scale. Retail media grew ~24% in 2024 against digital ad market growth of ~11%. The mix is shifting fast.
AI engines index Amazon reviews and product pages heavily. When ChatGPT, Claude, Perplexity, or Gemini answer "best air fryer under $150," the answer draws from Amazon product data and review corpus more than from Google Shopping. Brands underinvesting in Amazon presence are also underinvesting in AI-answer visibility. See the 5W Credit Cards AI Visibility Index 2026 for the parallel dynamic in a different category — the aggregators own the AI answer regardless of who spends on ads.
What The Bottom Line Says
Amazon Ads went from a curiosity in 2015 to a $10B business in 2018 to a $56B business in 2024. It is now the third pillar of digital advertising and the model every other retailer is trying to replicate. The Google-Meta duopoly is over. The Google-Meta-Amazon triopoly is here. The next chapter is retail media compressing everyone else — and TikTok Shop building the closed-loop model that will eventually challenge Amazon on its own terms.
