There are various ways that product feeds work, but they all share one common goal: to provide updated product information to retailers in a format that can be easily read and imported. Product feeds are typically used to list products for sale on an ecommerce website, but they can also be used to provide information about products in brick-and-mortar stores.
Product feeds are usually generated by the retailer, and they can be created manually or through specialized software. Once the feed is created, it can be uploaded to a server where it can be accessed by the retailer's website or by third-party software. When a customer visits the retailer's website, the product information is pulled from the feed and displayed on the page.
Product feeds are typically updated on a regular basis, and retailers can set up their system to automatically fetch the latest feed data. This ensures that customers always have access to up-to-date product information.