← DictionaryReturn on Ad Spend
Revenue produced per unit of advertising spend.
Revenue divided by ad spend.
What It Is
You will find Return on Ad Spend in the Measurement layer, alongside the rest of Conversion. The canonical meaning is revenue produced per unit of advertising spend.
It is something measured and compared over time, so one reading in isolation tells you almost nothing. Once it is defined that clearly, arguments about it usually stop.
How It's Used
Return on Ad Spend earns its keep in reporting, analytics reviews and the arguments about what the numbers mean. It normally appears alongside Return on Investment, Ad Spend and Performance Marketing. The practical test is whether it is measured the same way each period, against something.
Why It Matters
The cost of being vague about Return on Ad Spend shows up later, not today. When it is unclear, reporting becomes a matter of opinion. Clarity here removes a surprising amount of downstream argument.
Picture a speedometer. It tells you how fast, not whether you are going the right way. Revenue divided by ad spend.
Termshift™
How the meaning shifts depending on who is using it, and where.
Professionally, Return on Ad Spend carries the narrow meaning: revenue produced per unit of advertising spend.
Explained to someone with no marketing background, Return on Ad Spend is revenue divided by ad spend.
The Bottom Line
If you only keep one thing about Return on Ad Spend: revenue divided by ad spend. Everything after that is detail.