Glossary entry
What is Smart Bidding?
Smart Bidding is Google Ads' family of automated bidding strategies (Target CPA, Target ROAS, Maximize Conversions, Maximize Conversion Value) that use machine learning to set bids in real time. They consistently outperform manual bidding once a campaign has 30+ conversions per month.
The Smart Bidding strategies
Target CPA: bids to hit your acquisition cost goal. Target ROAS: bids to hit revenue ratio. Maximize Conversions: spends the budget chasing the most conversions. Maximize Conversion Value: same but optimized for revenue. Choose based on whether you have value data.
When Smart Bidding fails
Insufficient conversion volume (under 30/month per campaign), broken conversion tracking, sudden landing page changes, or unrealistic targets that the algorithm can't hit without choking volume.
Smart Bidding and CAPI
Smart Bidding eats whatever conversion data you feed it. Pair it with a Conversion API and enhanced conversion values to give the algorithm full signal. Most underperformance is upstream tracking, not downstream bidding.
How Unled Network helps
Managed Campaigns migrates accounts to Smart Bidding with proper signal, value tracking, and quarterly target recalibration. Most clients see 20 to 40% efficiency improvement post-migration.
Related Unled Network services
Frequently asked
Smart Bidding or manual?
Smart Bidding when you have conversion data. Manual when you don't, or when you need granular control during testing.
How many conversions does Smart Bidding need?
30+ per month per campaign as a floor. 50+ for stable Target ROAS.
Can I cap Smart Bidding's CPC?
Indirectly via the target. Hard CPC caps are not supported in modern strategies.
How long until Smart Bidding stabilizes?
2 to 3 weeks of learning. Major changes restart the learning period.