The overarching goal of ENVRI-FAIR is for all participating RIs to improve their FAIRness and prepare the connection of their data repositories and services to the European Open Science Cloud. This deliverable reports the efforts Task 7.3 contributed to the development of common FAIRness goals in the second half of the project. The objective of this task is to provide co-development support driven by an implementation plan that identified by each subdomain, joint use cases among RIs or subdomains, and other needs identified during the project. In the second half of the project, Task 7.3 focused on the support for the integration with ENVRI-Hub, testing and validation of the developed services by subdomains, and exploitation and knowledge transfer.