Customer acquisition cost is the amount of money a business spends to get one new customer. Digital marketing directly affects this number because the better your marketing performs, the less you spend to attract each person. For example, if a business spends fifty dollars on ads and gets ten customers, each customer cost five dollars. Improving the ad or targeting the right audience better can bring that cost down. Good digital marketing makes a business more efficient with its budget over time. Do you think most small businesses actually track how much it costs them to get each new customer?