One beginner's CBO test that saved her sanity

One beginner's CBO test that saved her sanity

Let's look at a real example. A skincare seller ran two campaigns side by side.

— First, she used ABO (Ad Group Budget Optimization, meaning you set a budget for each ad group yourself). She had 4 ad groups at $20 each.
— Next, she switched to CBO (Campaign Budget Optimization, meaning TikTok spreads one budget across groups for you). One campaign, $80 total.

After 7 days, the CBO version got 31 sales at $9.40 each. The ABO version got 22 sales at $13.10 each. Same creatives, same audience.

Why? CBO quietly moved money to her best ad group.

Try this: pick one CBO campaign and let it run untouched for 3 days. Don't worry if it feels slow at first, that's normal.