ENVRI-Hub NextD9. 1V1PublicApproved by the EC

The ENVRI-Hub platform is designed to provide seamless access to environmental data and services across multiple European Research Infrastructures (RIs), addressing key challenges in data discovery, access, composition, processing, and usability. The platform enhances collaboration and interoperability by offering tools for automated data processing, federated authentication, and workflow automation while supporting virtual research environments (VREs) to facilitate reproducible research. The ENVRI Knowledge Base is one of the ENVRI Hub key components; it aims to help users manage and retrieve data efficiently, allowing support for advanced search. In this deliverable, we analyse the design requirements for the ENVRI Knowledge Base and its recommendation features based on user stories collected from the stakeholders and propose a microservice-based system architecture, including a User Interface, Knowledge Manager, Knowledge Finder powered by Personalized Knowledge Agent, Knowledge Base API, a Knowledge Storage System, and a Knowledge Base Service Library. The deliverable reviews the technical choices and presents the current development status.