This work package is optional, but helps in the decision support. The IDPSIO (Interoperable Digital Public Services Implementation Orientation) Assessment Tool aims to supports digital public service owners in deciding the approach to follow in order to implement their digital public services. The IDPSIO model has been developed to support the Member States in understanding the implementation impacts from different angles: integration, technology, governance, and legal. https://interoperable-europe.ec.europa.eu/collection/european-interoperability-reference-architecture-eira/solution/egovera/release/v210