This document summarizes the activities of Work Package 2 for an EU co-funded project. It discusses the development and evaluation of the project's data model, including iterative refinement based on validation testing and provider feedback. Key points include finalizing the 1.2 version of the model, removing unused classes and properties, and analyzing metadata usage patterns across different provider datasets. The work package also oversees infrastructure integration and provides access to ingested data through search and browse interfaces.