Marketplaces and shopping channels reach buyers your own store can't. The key is a product feed — a structured file of your catalog that channels read automatically — kept in sync so prices and stock never go stale.
What a product feed is
A feed is a machine-readable list of your products with the fields each channel requires: title, description, price, availability, images, GTIN/UPC and category. Google Shopping and Amazon read it to build your listings.
The main channels
- Google Shopping: product listings in Google search and the Shopping tab, driven by a feed in Google Merchant Center.
- Amazon: the largest U.S. marketplace; needs accurate identifiers and category data.
- Others: eBay, Walmart Marketplace, Meta and TikTok Shop all consume similar feeds.
Keeping listings accurate
The hard part isn't the first upload — it's staying current. If a product sells out or you change a price, the feed must update or you'll get cancellations and channel penalties.
Automate it: generate the feed from your store in real time so stock and price changes propagate within minutes, not days.
How to start
- Clean your catalog data: titles, identifiers and images.
- Generate a channel-specific feed from your store.
- Connect Merchant Center / Seller Central and validate.
- Schedule automatic refreshes and monitor for rejected items.