Amazon Days
what I learned and what I taught at Amazon Ads: working backwards with careful speed, recruiting and promoting, retail media, marketing science, Day 1, Day 2 and Day 3 culture through pandemic and layoffs, transparency in big tech
| Platform |  | Pricing | Freemium | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 112 | Founded | 3 years ago | Last Issue | 11 days ago |
| Active | |||||
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Two brand doors into genAI answers
Two pieces landed in my feed this week that, read together, sketch out the whole battlefield brands now face in generative AI.
The first is Juozas Kaziukėnas’s tracker of six months of ChatGPT ads. The second is Katie Deighton’s Wall Stree...
Who's doing the shopping in Amazon's $200 B Q2?
Last week, Amazon reported its Q2 2026 earnings this week, and its stock jumped:
As my previous newsletters and Amazon Days substacks talked a lot about the cost cutting and culture, let’s focus this one on the top line:
This Substack is...
What's new in platform research?
I spent a gorgeous morning yesterday at BU Questrom’s Platform Strategy conference, an annual gathering of economists and strategy researchers who study … platforms: how they compete, personalize, and increasingly, how they get disrupted or...
Amazon Days have arrived
In the news this week, from Coresight Research: Walmart captured 11.08% of total US retail sales in 2025, Amazon close behind at 10.34%. Both crossed the 10% mark for the first time. Costco is a distant third at 3.82%.
The big story: Amazo...
Why Your AI Rollout Needs 2 Playbooks
Business Horizons article combines employee with customer adoption
95% of generative AI pilots fail to move the P&L (Challapally et al. 2025). RAND put AI project failure above 80%, twice the rate of non-AI tech projects. S&P Global found...
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Authors
The writers behind this newsletter.
ex-Amazon Principal Research Scientist, now Distinguished Professor of Marketing and vice-Dean of Research. Called Best Marketing Academic on the Planet, I published over 100 award winning articles on long-term marketing effectiveness.
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