# Campaign budget optimization

Concept · [Business and metrics](https://ecosystem.samcarlton.com/business)

Also called: CBO, advantage campaign budget, campaign budget

An ad platform setting that [shares](https://ecosystem.samcarlton.com/equity) one budget across several ad groups and moves money automatically toward whichever is performing best.

**For example:** Instead of splitting the budget evenly, an advertiser [turns](https://ecosystem.samcarlton.com/turn) on campaign budget optimization and the platform shifts spending to the ad set getting the cheapest sign-ups.

## Connects to (3)

- [Pay-per-click advertising](https://ecosystem.samcarlton.com/ppc): Online ads where you pay each time someone clicks, most often shown beside search results.
- [Retargeting](https://ecosystem.samcarlton.com/retargeting): Showing ads to people who already visited your site or used your app, to bring them back.
- [CPM](https://ecosystem.samcarlton.com/cpm): Cost per thousand impressions.

Map view: https://ecosystem.samcarlton.com/campaign-budget-optimization