Meta optimizes toward whatever conversion you give it. Feed it every purchase and it finds buyers of anything, including the low-margin products you'd rather not advertise. A conversion event filtered to your winning products trains the algorithm on the buyers you actually want more of. The attributes that define a winner, like margin tier, collection, or product line, usually already sit in your Shopify admin as product metafields.

Using Littledata's Event Editor, you can create a custom Purchase event filtered on a Shopify product metafield (such as margin tier = "High" or product line = "Core Range") so it only fires when an order contains those products.

Set the new event as your campaign's optimization goal, and Meta builds its audience model on buyers of your target products instead of all purchasers.
Product metafields are custom fields you define in the Shopify admin, holding attributes like category, margin tier, collection, or product line. Meta never sees this data unless you explicitly send it. Here are examples of the metafields you can build a campaign around:
| Data points you can target |
|---|
| Customer metafields |
| Order metafields |
| Product metafields |


Shopify is an e-commerce platform that enables businesses to create, customize, and manage online stores, offering tools for product management, payment processing, and order fulfillment. It provides scalable solutions for entrepreneurs and enterprises to sell products online, in-person, and across various sales channels.
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