CRO (Conversion Rate Optimization) is the set of techniques and strategies aimed at improving the conversion rate on a website or marketing campaign. It is not just about attracting traffic, but about getting visitors to perform the desired action, such as a purchase, subscription, or download. To achieve this, data is analyzed, A/B tests are performed, and key elements such as calls to action (CTA), page design, and site speed are optimized. Tools like Google Optimize, Hotjar, and Optimizely facilitate data-driven optimization.