PPC
Smart Bidding
The short answer
Smart Bidding is Google Ads' automated bidding system that uses machine learning to adjust your bids in real time, aiming to hit a goal like maximizing conversions or a target ROAS.
Full explanation
It depends heavily on having enough accurate conversion data to learn from — a new account or one with poor conversion tracking often performs worse under Smart Bidding than with manual bid control, at least until enough data accumulates.
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