These measure how well your marketing is working.

How much you earn compared to what you spend on ads.

What it costs to get each new customer through ads, promotions, or influencer campaigns.

How many people click on your ad or link after seeing it.

How many people add items to their online cart but don’t finish checkout — common in online stores.

How many people actually buy or sign up after visiting your site or seeing your ad.

Overall value of your marketing campaigns versus the cost.