Cost Per Acquisition (CPA) is a marketing metric that measures the total cost of acquiring a new customer through paid advertising, content marketing, or other promotional efforts. It is calculated by dividing total marketing expenses by the number of new customers gained. Businesses track CPA in CRM systems to assess the efficiency of their marketing campaigns and allocate budgets effectively. A lower CPA indicates a cost-efficient strategy, while a higher CPA may require optimization through improved targeting, retargeting efforts, or conversion rate optimization. SaaS companies, e-commerce businesses, and digital advertisers heavily rely on CPA analysis to maximize return on investment (ROI).