Smart Bidding
In short
Google Ads bidding strategies that use auction-time prediction to optimize for conversions or conversion value.
Smart Bidding is Google’s group of bidding strategies for conversion or conversion-value objectives. It predicts the value of an advertising opportunity and adjusts bidding at auction time rather than relying on one manually assigned bid for every situation.
What guides the bids
The advertiser chooses the goal and the relevant strategy. Examples include Maximize conversions and Maximize conversion value, with optional CPA or ROAS targets where supported. The system uses contextual signals such as device, location, and time alongside available performance information.
Smart Bidding is a subset of automated bidding. A strategy aimed primarily at clicks or visibility should not automatically be described as conversion-based Smart Bidding.
The system still needs a useful definition of success. If a campaign measures a low-value action as its main conversion, bidding will optimize toward that recorded action.
Illustrative example
A store records completed orders with their actual transaction values. It chooses a conversion-value strategy and reviews the results against its commercial target. A higher-value order contributes a different signal from a smaller one.
The example assumes the values are accurate. A target is an optimization objective, not a guarantee for every auction or reporting period. Check tracking changes, conversion delays, and the volume of evidence before attributing a short-term fluctuation to bidding quality.