Conversion Rate Optimization (CRO) focuses on improving the percentage of website visitors who complete a desired action, such as making a purchase or filling out a form. CRO helps maximize the value of existing traffic, leading to higher conversions and increased ROI without spending more on advertising. Key tactics include optimizing user experience (UX), refining messaging, leveraging buyer personas, A/B testing, and analyzing competitors. Tools like Google Analytics and Hotjar can help monitor performance. By personalizing experiences, reducing page load time, and using clear CTAs, businesses can boost conversions, lower customer acquisition costs, and enhance brand reputation.