The healthcare industry is undergoing a digital transformation, and at the heart of this shift lies the need for efficient, secure, and interoperable data exchange. Standards like HL7 and FHIR have emerged to meet these demands, streamlining how health data is shared among systems, providers, and patients. With the evolution of these protocols, organizations are increasingly seeking the guidance of FHIR experts to help implement and manage these technologies effectively. Understanding HL7 and Its Legacy HL7, or Health Level Seven, has long been a standard for the exchange of clinical and administrative data in healthcare. Developed in the 1980s, it played a foundational role in enabling electronic health record (EHR) systems to communicate. HL7 version 2, in particular, has been widely adopted in hospitals and clinics around the world. Despite its success, HL7 has limitations. Its complex structure and lack of modern web compatibility have made it difficult for newer healthc...