Campaign Management and Optimization
This domain tests the operating rhythm: account structure, budgets, bid strategies, scheduling, experiments, and the optimization loop.
Structure and budgets
Account > campaign > ad group > keywords and ads. Keep one tight theme per ad group. Shared budgets cap a group of campaigns. Daily budgets can flex, so monitor monthly pace. Segment by goal, geography, or product line so budget and bid strategy are not fighting each other.
Bid strategies
Manual CPC, Maximize Clicks, Maximize Conversions, Target CPA, Target ROAS, and Target Impression Share. Automated strategies need conversion volume and a stable target; changing targets too often restarts learning and makes performance hard to read.
Optimization loop
Mine the search terms report for negatives, test ad copy and landing pages, apply device/location/time bid adjustments, exclude irrelevant audiences, and use automated rules for anomaly alerts. Use experiments for causal tests rather than judging changes from day-to-day noise.
Worked example
Campaign A has CPA $20, Campaign B CPA $60, total budget $1,000/day. A spends $400 and gets 20 conversions; B spends $600 and gets 10. Blended CPA is $33.33. Shift $200 from B to A: A gains 10 conversions at $20, while B loses about 3.3 conversions, for a net gain of about 6.7 conversions. Keep shifting until marginal CPA equalizes, not until one campaign is exhausted.
Traps
Reacting to every daily CPA fluctuation; pausing the only keyword with volume; using Target ROAS with too few conversions; ignoring search term waste because the keyword looks relevant; and changing automated bid targets repeatedly.