A product feed or product data feed is a file made up of a list of all the products you sell on your site.
For each product, the feed typically contains a product image, title, product identifier, URL, price, currency and product attributes.
The product attributes allow Episerver Personalization to understand what that product is and how it can be recommended. An example of product attributes would be: type, size, color, brand.
Ideally, the product feed needs to contain all products from your side - both in stock and out of stock. The quality of recommendations that Episerver Personalization tools can generate is directly dependent on the quality of your product feed.
For more information, please refer to the latest feed specification in this article.