Amazon and Walmart Are Competing to Own the Decision Layer of Retail

Amazon and Walmart are shifting competition from logistics and price to control of the “decision layer” — the tools and experiences that influence what consumers see and buy. Amazon’s recent milestones (topping the Fortune 500, new AI-driven shopping discovery features, and Proteus warehouse robots) underscore growth driven by cloud, advertising and AI rather than pure retail. Walmart is countering with affordability, scale, faster fulfillment (1 million drone deliveries), fintech expansion via OnePay and expansion into higher-margin categories like pro-grade home improvement. The battle alters merchant economics and consumer behavior: platform-driven personalization favors Amazon’s vertical influence, while Walmart leverages its physical footprint and value positioning — a strategic shift with implications for retail margins, ad spend, payments and timing of promotional events (Prime Day moved to June 23–26).