Google Ads Smart Bidding leverages machine learning to automatically optimize bids across hundreds of signals in real-time, with four primary strategies—Target CPA, Target ROAS, Maximize Conversions, and Maximize Conversion Value—each suited to different campaign objectives and requiring minimum conversion history for optimal performance. Success depends on accurate conversion tracking, realistic target-setting, and patience through the algorithm's 7–21 day learning period. Portfolio bidding strategies can extend Smart Bidding's effectiveness across multiple campaigns, creating unified optimization for complex accounts.
Google Ads Smart Bidding uses machine learning to automatically optimize your bid amounts in real-time, maximizing conversions, conversion value, or return on ad spend based on your campaign goals. Understanding the four primary Smart Bidding strategies—Target CPA, Target ROAS, Maximize Conversions, and Maximize Conversion Value—is essential for scaling profitable campaigns while reducing manual bid management overhead.
✅ Key Takeaways
- Smart Bidding uses AI and historical data to adjust bids for every auction, increasing efficiency and performance at scale
- Target CPA works best for conversion-focused campaigns with stable conversion data; requires at least 30 conversions in the last 30 days