FHIR and HL7 standards play a crucial role in ensuring healthcare interoperability and secure patient data exchange in telemedicine apps.HL7 is a set of international standards for electronic health information exchange, while FHIR simplifies data exchange using RESTful APIs.FHIR offers modern, developer-friendly features like support for mobile apps and cloud services, unlike the HL7 v2 and v3 standards.FHIR enhances EHR/EMR integration, enables real-time data access, and ensures secure patient data exchange in telemedicine.Challenges in implementing FHIR include data standardization, compliance with regulations, integration complexity, and security risks.Integration tips include using FHIR-compliant APIs, implementing SMART on FHIR for authentication, and leveraging cloud-based storage.The future of telemedicine will leverage FHIR and HL7 to support predictive analytics, IoT devices, and remote patient monitoring.Key benefits of FHIR include improved data accessibility, security, scalability, and mobile integration in telemedicine apps.Overall, FHIR and HL7 standards empower developers to create secure and interoperable telemedicine solutions, enhancing patient care.