CPA (Cost Per Acquisition) measures the average cost to achieve a specific result from advertising, such as a lead, enquiry, signup, or purchase. It is calculated by dividing total spend by the number of acquisitions. CPA is one of the most useful efficiency metrics because it connects budget directly to outcomes rather than just clicks or impressions. A healthy CPA depends on your margins and customer value, so it should be reviewed alongside revenue, customer lifetime value, and lead quality. Reducing CPA often involves improving targeting, creative, landing pages, and conversion tracking accuracy.
Best Practices for Mobile Responsiveness
Discover why mobile responsiveness matters in 2026. Learn how to improve mobile responsive website design for better SEO, usability, and conversions.

