The SKU (Stock Keeping Unit) is a unique product identifier mainly used in affiliate marketing within product data feeds. It serves to precisely identify individual products and match them correctly. On large price comparison sites or marketplaces, such as Idealo, the SKU is especially important to clearly assign different offers and product variations.

At selecdoo, SKUs are used to ensure the quality and accuracy of product data. By using SKUs, products in extensive data feeds can be managed efficiently and displayed consistently. This facilitates the automatic matching of product information, prevents duplicates, and improves the user experience through accurate product presentation.

In summary, the SKU is a key element in affiliate marketing for uniquely identifying products, optimizing data feeds, and ensuring compatibility between advertisers, affiliate platforms, and comparison portals.