There are three main components of FHIR-Fast Healthcare Interoperability Resources: Resources: FHIR resources are the building blocks of healthcare data and represent a specific piece of clinical information, such as a patient, medication, or diagnosis. Each resource has a standard structure and set of elements that describe its characteristics and relationships with other resources. API: FHIR provides a standard API, application programming interface, for accessing and manipulating healthcare data. This API is based on modern web technologies, such as REST and JSON, and allows healthcare systems and applications to easily exchange data using standard web protocols. Terminology: FHIR includes a standard terminology framework that defines the codes and concepts used to represent clinical data. This framework allows different healthcare systems and applications to use a common language when exchanging data, which helps to ensure that data is accurately interpreted and understood by all parties involved.