Survivors of adolescent and young adult (AYA) cancers, defined as individuals diagnosed with a primary malignancy between age 15 and 39 years, are a growing population with unique developmental, psychosocial, and health-related needs. These individuals are at excess risk of developing a wide range of chronic comorbidities compared with the general population and, therefore, require lifelong, risk-based, survivorship care to optimize long-term health outcomes. The health care needs of survivors of AYA cancers are particularly complicated given the often heterogeneous and sometimes fragmented care they receive throughout the cancer care continuum. For example, AYA survivors are often treated in disparate settings (pediatric v adult) on dissimilar protocols that include different recommendations for longitudinal follow-up. Specialized tools and techniques are needed to ensure that AYA survivors move seamlessly from acute cancer care to survivorship care and, in many cases, from pediatric