Google has moved the Smart Campaign API creation cutoff to September 23. New create operations will fail, while existing campaigns can still be updated and served; Google points developers toward Performance Max, Search or Demand Gen for new automation.
Google Ads has changed a long-standing edge case in automated bidding: budget-constrained campaigns now aim more consistently at their configured target instead of sometimes materially overachieving it.
Google’s September Search changes now form a broader migration story: legacy campaign-level Broad Match and standalone Automatically Created Assets settings will be converted into AI Max, while language targeting stops affecting Search delivery and related API mutations begin failing.