Comment on SKU vs. UPC: What’s the Difference?

A stock-keeping unit, or SKU, is a unique alphanumeric code that is assigned to an individual product. SKUs appear on products as unique identifiers and are used to optimize inventory management and make tracking more efficient. In contrast, a universal product code, or UPC, is a 12-digit code that is purchased and licensed by the... Dalia Ramirez writes for NerdWallet.