CBO vs ABO: How to Manage Your Campaign Budget

Introduction: Should you manage your ad budget at the campaign level or the ad set level? This is one of the most fundamental and critical questions among Meta advertisers. CBO (Campaign Budget Optimization) and ABO (Ad Set Budget Optimization) are two different philosophies determining how budget is distributed among ad sets. A wrong choice can lead to a winning ad set running out of budget or budget being wasted on inefficient sets.

Content:

• CBO (Campaign Budget Optimization): You set the budget at the campaign level. Meta's algorithm distributes budget among ad sets in real-time, prioritizing the set that is performing best at that moment. CBO allows the algorithm to do its job and is usually preferred when scaling.

• ABO (Ad Set Budget Optimization): You manually set the budget directly on each ad set. This forces a specific amount to be spent on each set. ABO is ideal when testing new creatives or new audiences to ensure each gets an equal chance.

• Which When? When testing, use ABO to give equal budget to each set. After finding winning creatives or audiences, move budget to CBO to let the algorithm automatically scale the best performance.

Conclusion: CBO and ABO are like weapons; ABO is most effective in the testing phase, while CBO is best for the scaling phase.