Medidata Link is a data integration platform that connects clinical trial data with real-world data (RWD) at the patient level to support long-term evidence generation. By linking EHRs, claims, and other data sources to trial records, it enables longitudinal patient tracking before, during, and after clinical trials. This allows for applications such as monitoring long-term outcomes, reducing patient loss to follow-up, supporting label expansion studies, building external control arms, and demonstrating economic value. Medidata Link uses tokenization to securely connect datasets and integrates into clinical trial workflows with minimal burden to sites and patients.