A commerce product feed lets a merchant distribute catalogue information in a machine-readable form. Search engines, marketplaces and AI assistants can index the feed ahead of time and use it to answer product queries without contacting the merchant for every search.
The feed must remain current and use stable identifiers so a later cart or checkout can refer to the correct item. Retailers also need controls for availability, regional differences, pricing changes and information that an assistant may present to a shopper.
ELI5
A commerce product feed is an organized list of products that software can read directly. It separates important facts such as price, size, features, and return policy into named fields.
For example, a headphone agent can compare impedance, connection type, price, and warranty across several products without guessing which text on each webpage contains the real specification.
