Catalog

A catalog is the structured list of everything you sell, each product with its ID, name, price, image, and stock status, uploaded to Meta so your ads can pull from it automatically.

Picture an online store with a few hundred products. You are never going to hand-build an ad for each one, and even if you did, the prices and stock would be wrong within a week. The catalog solves that. You give Meta one feed, usually synced straight from your store platform, that lists every product in a format Meta can read, and from then on Meta works from that feed instead of from anything you built by hand. It lives in Commerce Manager, and once it is connected it updates itself, so when a price drops or an item sells out, the change flows through without you touching an ad.

This matters because the catalog is the foundation under every product-level ad Meta can run for you. Without one, Meta has no idea what you sell, so it cannot show a specific person the specific thing they looked at, and it cannot rebuild your range into ads at scale. The moment you want shopping ads that feel personal rather than a single flat image, the catalog is the thing that has to exist first.

A catalog is only ever as good as the feed behind it. Wrong prices, missing images, items marked in stock when they are gone, all of it ships straight into live ads, because Meta trusts the feed you gave it. The unglamorous work is feed hygiene, checking that what Meta reads actually matches what a customer will find when they land on the page, and that quiet job decides more of your catalog performance than any targeting choice.

Meta can only sell what your feed tells it you have, so the boring feed is the ad.