Best Healthcare APIs for OAuth

FHIR is characterized as a 'RESTful' framework, aligning with the general industry interpretation of REST. However, it predominantly adheres to Level 2 of the REST Maturity Model within its core specification, while achieving full Level 3 compliance is feasible through the adoption of extensions. Being a standard, FHIR relies on the uniformity of resource structures and interfaces, which some may argue conflicts with REST principles; nonetheless, this standardization is crucial for maintaining consistent interoperability among various systems. Each "resource type" is associated with a defined set of interactions, allowing for the precise management of resources. Applications that assert their compliance with this framework refer to themselves as "RESTful FHIR," emphasizing their adherence to these standards. Furthermore, within this RESTful design, transactions are executed directly on the server resource via HTTP request and response, reinforcing the framework's integrity and functionality. This structured approach not only enhances interoperability but also streamlines the development of applications that utilize FHIR.