Agency Best Practice | The Compounding Catalog: Optimize Listings for Better Ranking, Ad Efficiency, and AI Shopping

In this episode of Marketplace Masters, Paul Sonneveld sits down with Alasdair McLean-Foreman, one of Amazon's earliest third-party sellers and founder and CEO of Teikametrics, to unpack Amazon's July 27 listing overhaul: titles cut from 250 characters to 75, a new 125-character Item Highlights field, and AI rewrites that went live automatically if brands didn't respond in time.Ten days in, the results are a mixed bag, with some sellers reporting sales drops and even brand names stripped from titles. Alasdair explains why this is much bigger than a formatting change: it's Amazon restructuring its catalogue into machine-readable content for Alexa for Shopping and the agentic commerce era. They cover how to split titles versus item highlights, why your ads data is now your best content optimisation signal, where the biggest wins sit (long-tail catalogues, with lifts up to 135% on reactivated SKUs), and how the same shift is playing out on Walmart's Sparky and TikTok Shop.If your content and advertising teams still operate in silos, this episode makes the case for tearing that wall down before Q4.If you're getting value from Marketplace Masters, hit follow and forward this episode to whoever owns your content and retail media.