How Does Google Ads Bidding Strategy Work?
Choosing the wrong bidding strategy wastes budget regardless of how good your keywords are. Here is how each option works and which one fits your situation.
Google Ads bidding strategy determines how Google spends your budget in each auction.
The choice between manual bidding and automated bidding strategies has a significant impact on campaign performance, and the right choice depends on how much conversion data your account has already accumulated.
Many advertisers use automated strategies in accounts that do not yet have enough data to support them, which is one of the most common reasons new campaigns underperform.
Manual CPC bidding gives you direct control over how much you bid for each keyword. You set the maximum amount you are willing to pay per click and Google does not go above it.
This is the right strategy for new campaigns with no conversion history, because automated strategies require conversion data to optimize toward and will make poor decisions without it.
Once an account is generating 30 or more conversions per month, automated strategies become significantly more effective than manual bidding.
Target CPA bidding tells Google to optimize your bids to get as many conversions as possible at or below a target cost per acquisition you set.
Target ROAS bidding does the same but optimizes toward a revenue return ratio rather than a cost per conversion. Both strategies use machine learning to adjust bids in real time based on signals like device, location, time of day, and user behavior.
They work well when the account has enough conversion history for the algorithm to learn from, and they underperform when that data does not exist.
Maximize Conversions and Maximize Conversion Value are similar to Target CPA and Target ROAS but without a specific target constraint. Google spends your full daily budget trying to get as many conversions or as much conversion value as possible.
These can burn through budget quickly in accounts without proper guardrails.
The typical error is switching a new campaign to Maximize Conversions with no conversion tracking in place, which causes Google to optimize toward page visits rather than actual business outcomes.