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Amazon Glossary

ROAS

Return on Ad Spend

Terms, metrics, and workflows around Amazon Seller, Vendor, and Marketplace operations.

What it means

ROAS (Return on Ad Spend) measures the revenue generated per euro of advertising spend: ROAS = (attributed revenue / ad spend). A ROAS of 3:1 means you earn 3 euros in revenue per euro of advertising. ROAS and ACoS are inversely proportional: ROAS = 1 / (ACoS / 100%). Higher ROAS indicates more efficient advertising spending.