Which of the following ACOS indicates the more efficient advertising campaign?

ACOS (Advertising Cost of Sales) is a key metric that measures the efficiency of your advertising campaigns. It is calculated by dividing total ad spend by total ad sales and multiplying by 100 to get a percentage. A lower ACOS indicates a more efficient campaign because you are spending less on advertising to generate a given amount of sales. Therefore, 12% ACOS is the most efficient among the given options. Higher ACOS values like 35%, 50%, and 95% mean that a larger portion of your sales revenue is being spent on advertising, indicating less efficiency.