The 4-level CPA baseline

To judge whether a campaign is hitting its target or underperforming, the engine needs a baseline. It checks four levels, in order of specificity, and stops at the first level with a usable signal:

1. The campaign's own Target CPA - most specific; if the campaign has a tCPA, that's the judge.

2. The campaign's own Target ROAS - the value-based alternative.

3. The account-wide Target CPA - set in Clicc's account settings.

4. The account's blended average - the last-resort fallback.

Each level is a gate: once one applies, the others are never consulted. A campaign with its own tCPA is never judged against the account average.

"Hitting target" has a tolerance

A campaign counts as hitting its target within a ±15% band (configurable) - so a $52 CPA against a $50 target is "hitting", not "missing by 4%". This stops normal variance generating churn.

Example. Campaign A has a tCPA of $40 → judged against $40. Campaign B has no targets of its own, and the account target CPA is $55 → judged against $55. Same account, different baselines, both fair.

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