campaign-diagnosis

Explain why a Google Ads, Meta Ads or TikTok Ads campaign's CPA, ROAS, conversions or spend changed by decomposing the move into spend, impressions, CTR, CPC and conversion rate and locating it in the campaign's ad groups or ad sets. Use when the user asks "why did my CPA go up", "what happened to campaign X", "why did conversions drop" or wants a root cause for a metric change.