Discover which performance metrics top e-commerce advertising agencies prioritize when measuring campaign success and business health. From fundamental efficiency indicators like ROAS (Return on Ad Spend) and CTR (Click-Through Rate) to comprehensive profitability measures such as MER (Marketing Efficiency Ratio), aMER (attributed MER), and EBITDA, these metrics reveal what separates amateur advertisers from seasoned professionals.
Understanding the hierarchy of these measurements is crucial for scaling e-commerce brands effectively. While some metrics focus purely on ad performance, others like Contribution Margin 3 provide deeper insights into true profitability after accounting for all variable costs. Whether you're hiring an agency or running campaigns in-house, knowing which metrics matter most can dramatically impact your decision-making and bottom line.