Server-side tracking
Trakt uploads your real sales to Google Ads with the gclid attached, on the right delay and deduplicated, so Smart Bidding optimises on revenue the browser tag never captured.
The Google Ads conversion tag fires in the browser, so it loses conversions to ad blockers, cookie limits, and orders that complete off-page or after a call. Offline conversion import sends the sale to Google from your server instead, tied to the original click. It is the difference between Smart Bidding optimising on a fraction of your revenue and optimising on all of it.
Beyond ecommerce
Offline conversions are how a call-driven or lead-gen business teaches Google what a good click looks like. When a deal closes in your CRM days after the click, Trakt uploads that closed revenue as the conversion, so bidding chases buyers instead of form fills.
Shadow mode logs the exact offline conversion Trakt would send to Google Ads, so you verify every one before it goes live.