The ROI of a Customer Data Platform is calculated in a number of ways. The most common way is to calculate the cost per lead that it generates. The cost-per-lead metric can be calculated in a number of ways. The most common way is to calculate the cost per lead that it generates. It can also be calculated by taking the revenue generated by each customer and dividing it by the number of leads, or by multiplying the revenue generated by each lead and dividing it by the number of customers.