Jan 6, 2026
Campaign Budget Optimization
CBO
Meta feature setting budget at campaign level with automatic distribution across ad sets based on performance. Now called Advantage Campaign Budget.
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Formula:
Campaign-level budget with auto-distribution
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Benchmarks
Let campaigns run 3-7 days before judging distribution. Algorithm needs time to find winners.
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Why It Matters
CBO works best when ad sets have similar audience sizes and goals. If one ad set has much larger audience, CBO may over-allocate. Use ad set spend limits when you need control. Don't judge CBO performance in first 3 days.
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