Customer Acquisition Cost (CAC) is a metric used to determine the costs associated with obtaining new customers for edTech products and services. This can include marketing and advertising expenses, salaries, customer onboarding costs, and other related expenses. By calculating CAC, companies are able to measure their return on investment from their marketing strategies and identify areas for improvement. It also helps to identify customer segments that are more profitable and cost-effective to target with edTech marketing services.