The momentum behind SMART on FHIR is undeniable. According to the U.S. Office of the National Coordinator for Health IT (ONC), nearly 90% of non-federal acute care hospitals now use APIs to enable patient access to their health data through apps, and more than two-thirds have adopted FHIR APIs specifically. Adoption is also rising in patient-facing solutions; hospitals enabling app-based access grew from 68% in 2021 to nearly 80% in 2023-24, while FHIR-based access increased from 56% to almost 70% in the same period. On the developer side, over half of health IT vendors already combine FHIR with OAuth 2.0 to build secure healthcare apps. With 87% of hospitals now served by EHR vendors certified on some version of FHIR, the foundation is in place,  making SMART on FHIR one of the most critical enablers of digital health innovation.