The program's cost per engagement benchmark refers to:

The cost per engagement (CPE) benchmark directly measures the financial outlay for each user interaction, such as a click, like, share, or comment. This metric is crucial for evaluating the efficiency of marketing campaigns, as it shows how much is spent to elicit a single engagement. The number of views is a measure of reach, not cost efficiency per interaction. The dollar amount spent per 1,000 impressions (CPM) measures the cost for every thousand times an ad is displayed, which is different from engagement. The percentage of potential customers who interacted with the content is an engagement rate, not a cost metric.