Enhanced conversions for leads vs offline conversions
They are related, but they do different jobs. Enhanced conversions improve matching. Offline conversions send later business outcomes back to Google Ads.
The short version
Use both when possible
Enhanced conversions help Google match a web lead to an ad interaction. Offline conversions help Google understand what happened after the lead was submitted.
For a serious lead-gen account, the ideal setup is usually both: capture the lead cleanly at submission, then upload qualified outcomes when the CRM or sales team has more information.
Why this matters
If you only optimise to the first form fill, the system can learn from volume rather than quality. If you only upload low-volume closed deals, there may not be enough data for bidding to learn smoothly. A practical setup often uses a higher-volume lead conversion plus offline quality signals.
Operating rule
Use enhanced conversions to improve measurement coverage. Use offline conversions to improve the meaning of the conversion. The first helps matching. The second helps commercial truth.