Conversion Rate Optimization (CRO) is the process of improving a website, landing page, or marketing campaign to increase the percentage of visitors who take a desired action, such as making a purchase, signing up for a newsletter, or filling out a contact form. CRO involves analyzing user behavior, testing different elements (such as headlines, images, and call-to-action buttons), and implementing changes to enhance the user experience and remove barriers to conversion. The goal of CRO is to maximize the effectiveness of marketing efforts and drive more conversions without increasing traffic. By optimizing conversion rates, businesses can achieve better results from their existing audience and improve overall marketing ROI.