Inside the New American Retail Tech Stack: Target, Kroger and Lowe's Are Quietly Building Like Software Companies

You don't usually associate the words platform engineering with a Midwestern grocery chain. But Kroger now employs more than 1,500 software engineers, Target's tech organisation is closing in on 5,000, and Lowe's has restructured its entire merchandising stack around an internal API platform. The story matters because the line between a major retailer and a technology company is increasingly difficult to draw.

What they're building in-house Personalisation engines, retail-media platforms, store-replenishment forecasting, computer-vision shrink detection — categories that used to be dominated by a handful of vendors are now being built internally by the largest U.S. retailers. The trigger is partly economics: licence fees at retailer scale dwarf the cost of a senior engineering team. The deeper reason is differentiation.

What they're still buying Foundational cloud, payments, identity and AI infrastructure remain firmly in the hands of vendors — and that vendor concentration around the hyperscalers is intensifying. What's vanishing is the middle layer: the dozens of mid-sized SaaS tools that used to populate every retailer's tech stack.

American retailers stopped pretending they could buy their way to differentiation. They are building it instead.

What to watch next Expect more in-house platforms, more retailer-led open-source projects and a steady consolidation of the vendor landscape around hyperscalers and a small number of strategic partners. For operators and investors, the read-through is clear: vendors selling middleware to enterprise retail are facing the hardest competitive environment in a decade.