The encyclopedia · Software & IT · Technical decision · 1991–2000s
Retail Link gave Walmart's suppliers live sales data in 1991, so they restocked themselves
Launched in 1991, Retail Link gave Walmart's suppliers live sales and inventory data, free to all vendors, so they replenished themselves.
Walmart
The solution
In the 1980s, most retailers treated their sales and inventory data as a proprietary secret, so suppliers replenished on orders and forecasts. Stockouts and overstock were the normal result, and a supplier had no way to see that its product was selling out until the store complained.
Walmart took the opposite side: in 1991 it introduced Retail Link, connecting its largest suppliers directly to the company's own sales and inventory systems. The tool was free to all vendors, and every day suppliers could see what stores were actually selling — then plan production and shipments to match.
The system evolved into a web-based product that let Walmart and suppliers track merchandise through the chain, and it became a fixture of the company's relationships with vendors. It is often cited as the moment retailers and suppliers began sharing demand data at scale.
Why it worked
- Live sales data let suppliers see demand instead of guessing
- Free access removed any excuse not to participate
- Replenishment could follow real sell-through
- The shared system tied suppliers closer to Walmart's network
What can be applied
Data hoarding protects nothing once scale depends on suppliers: giving partners a live read on demand converts them from order-takers into co-planners, and the retailer keeps the network advantage.
Aftermath
Retail Link grew into a web platform that Walmart and its suppliers used for daily replenishment planning, and it became a landmark case in retailer-supplier data sharing, later joined by systems like collaborative forecasting and RFID tracking.
Sources
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