The compliance of health terminology servers with the FAIR principles is crucial for establishing an interoperable digital health ecosystem that facilitates health data exchange. These servers must maintain high-quality standards while providing persistent, multilingual, and cross-lingual management of health terminologies. Implementing the FAIR principles is vital for creating consistent connections within One Digital Health, leading to better global healthcare outcomes and decision support systems by supporting international collaboration and facilitating interactions between all the actors involved in health data usage. Thus, this paper focuses on aligning the Health Terminology/Ontology Portal (HeTOP) with the FAIR principles, hosting the One Digital Health - Unified Terminology (ODH-UT).