Which metric defines Campaign Efficiency?

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Multiple Choice

Which metric defines Campaign Efficiency?

The main idea being tested is how effectively ad spend translates into revenue. The metric that captures this efficiency is ACOS or ROAS. ACOS (Advertising Cost of Sales) expresses ad spend as a percentage of attributed sales, calculated as ad spend divided by sales. A lower ACOS means you’re spending less to generate each dollar of sales, i.e., higher efficiency. ROAS (Return on Ad Spend) flips that perspective, showing how many dollars of sales you earn for each dollar spent, calculated as attributed sales divided by ad spend. Higher ROAS indicates more efficient spending. In fact, they are reciprocal measures, so you can track either one depending on your preference. For example, if you spend $100 and generate $500 in attributed sales, ACOS is 20% and ROAS is 5x. This directly shows efficiency. In contrast, metrics like impressions measure visibility, click-through rate measures engagement, and conversion rate measures how well clicks convert to sales—these describe activity levels but not the overall efficiency of converting spend into revenue.

The main idea being tested is how effectively ad spend translates into revenue. The metric that captures this efficiency is ACOS or ROAS. ACOS (Advertising Cost of Sales) expresses ad spend as a percentage of attributed sales, calculated as ad spend divided by sales. A lower ACOS means you’re spending less to generate each dollar of sales, i.e., higher efficiency. ROAS (Return on Ad Spend) flips that perspective, showing how many dollars of sales you earn for each dollar spent, calculated as attributed sales divided by ad spend. Higher ROAS indicates more efficient spending. In fact, they are reciprocal measures, so you can track either one depending on your preference.

For example, if you spend $100 and generate $500 in attributed sales, ACOS is 20% and ROAS is 5x. This directly shows efficiency. In contrast, metrics like impressions measure visibility, click-through rate measures engagement, and conversion rate measures how well clicks convert to sales—these describe activity levels but not the overall efficiency of converting spend into revenue.

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