Smart Bidding is a core topic in the Google Ads Search Certification . If you’ve already mastered Ad Rank and keyword match types (from the first article), your next priority should be understanding how Google’s automated bidding strategies work , when to use each , and how they influence performance . This guide explains Smart Bidding in a clear, exam-oriented format, backed by the actual question types found in the Search Ads certification test. Smart Bidding is a subset of automated bidding strategies in Google Ads that use machine learning to optimize for conversions or conversion value in real-time auctions. Smart Bidding evaluates: Each auction is optimized individually using these signals — a concept known as auction-time bidding .