The OpenHIE Health Financing toward UHC working group is focused on identifying health care financing data exchange needs, and working synergistically with the OpenHIE community to ensure that data exchange processes and requirements meet the needs of the health care financing communities. openIMIS is an open-source software tool for the digitalisation and efficient management of health financing workflows. Currently being used to manage a variety of health protection schemes in Nepal, Tanzania, Cameroon, Chad, and DRC, openIMIS offers seamless connections between beneficiaries, health service providers, and payers. In its various implementations, openIMIS users have felt the need for interoperability with other digital health systems and the initiative has already launched efforts to create standards-based communication architecture allowing for interoperability with OpenMRS/Bahmni and DHIS2. As the openIMIS and OpenHIE communities are working closely together in these developments we are confident that openIMIS will act as the reference technology for the interoperability architecture for UHC that the OpenHIE subcommunity is working on developing in 2019. This session will give participants not only a platform to learn about the Architecture Diagram for UHC (v0.1), but will also showcase how the architecture can be realized through a software tool. For the two communities, the session will provide an opportunity to learn about the various interoperability requirements of implementers, so as to address them in future developments as well as the opportunity to contribute towards their development.