The following table represents the OHIE reference technologies. It is a list that is expanded as new workflows and use cases are added. See the Workflow Collection Maturity model that describes the business processes that these tools support.
A Health Facility Registry serves as a central authority to uniquely identify all places where health services are administered within the country – “Where?”
A Health Worker Registry is the central authority for maintaining the unique identities of health providers within the country – “By whom"
A Health Interoperability Layer receives all communications from external services within a health geography, and orchestrates message processing among the external systems and the OpenHIE component layer.
External systems, such as the OpenMRS electronic medical records (EMR) system and the RapidSMS mHealth application, are used by clinicians and by community health workers to access and update a patient’s person-centric shared health information and to record healthcare transactions.