MER vs ROAS: Choosing the Right Metric for eCommerce Growth
The Marketing Efficiency Ratio (MER) and Return on Ad Spend (ROAS) each offer a unique lens for evaluating marketing performance. These metrics help you measure the effectiveness of your advertising efforts and make smarter strategic and tactical decisions across channels. While they serve different purposes, MER and ROAS may seem similar, so it’s easy to get confused about which one to use. That’s why understanding when and how to apply each metric is essential in the path of driving growth.