
When implementing a bidding strategy on Google Ads to maximize conversions with a target CPA, monitor the cost/conversion metric over the last 90, 60, and 30 days.
If you observe a positive trend in reducing the cost/conversion, consider adjusting the target CPA. However, make sure that the weekly variability of the cost/conversion has not exceeded 20% over the last four weeks, as having consistent and predictable data is crucial.
This should be done cautiously to not limit your bids too much and lose visibility and potential conversions.
🔍 Extra tip: be careful with having auto-apply recommendations activated so that Google Ads decides for you the type of bidding, whether you use target CPA or target ROAS, or how much CPA or ROAS you should have. Completely delegating these decisions to automation is like handing over the responsibility of your campaign strategy to Google.