Google Ads Offline Conversion tag

The Google Ads offline conversions tag lets you send offline conversion data from a server GTM container directly to Google Ads. 

This means you can automatically send information about offline sales (like phone or in-store sales, upsells, and cross-sells) to Google Ads. You don't need to manually upload files or use other tools. This is useful for tracking sales that happen outside the internet and for using Google's tools to find customers who are more likely to buy something, whether the sale is online or offline.

Useful links

1. Google Ads Offline Conversion Tag on Github.
2. Google Ads offline conversion using server GTM article.