04/10/2023
Google is removing four attribution models (first click, linear, time decay, and position-based) in Google Ads and Google Analytics starting May 2023. Existing conversion actions using the removed models will automatically convert to the data-driven attribution (DDA) model, or advertisers can manually change to the 'last click' model. Google Ads liaison Ginny Marvin, shared on Twitter that āuse of rules-based attribution models has dropped significantly with the introduction of DDA 3 years ago. Fewer than 3% of conversion actions in Google Ads use them now. DDA has the broadest adoption & is available to all businesses, with no data requirements.ā
So, what happens to conversion actions that are already using these models?
Google confirmed any conversion action using the near-deprecated models will automatically convert to the data-driven attribution model.
Advertisers can choose the existing ālast clickā attribution model but will have to make this change for each conversion action manually.
While DDA should be used for optimization, viewing data with these other models can provide useful insights.