Google Ads shopping remarketing works by showing targeted ads to people who have previously interacted with your products on your website or in your app. These ads are displayed in the Google Search Network, Google Display Network, and YouTube.

Here’s how it works:

1. Someone visits your website or app: When someone visits your website or app, Google Ads adds them to a remarketing list based on the actions they take on your site, such as viewing a product, adding an item to their cart, or completing a purchase.
2. They leave without making a purchase: If someone leaves your website or app without making a purchase, you can use Google Ads to show them relevant ads featuring the products they previously viewed or added to their cart.
3. They see your remarketing ad: When someone who is on your remarketing list searches for related keywords on Google, browses the web on the Google Display Network, or watches videos on YouTube, they may see your shopping remarketing ad featuring the products they previously viewed.
4. They click on your ad and complete a purchase: If someone clicks on your shopping remarketing ad and returns to your website to complete a purchase, you’ll be able to track the conversion in Google Ads.

Shopping remarketing campaigns in Google Ads are an effective way to drive sales by targeting people who have already shown interest in your products. By showing them relevant ads that feature the products they are interested in, you can encourage them to return to your website and complete a purchase.