This deliverable provides a final overview of the RDA TIGER communication service provision and outlines key lessons learned throughout the project’s implementation. As the concluding report of Work Package (WP) 2 on Communications, it reflects on the evolution, delivery, and impact of the communications activities and service designed to support the RDA TIGER Working Groups (WGs), amplify project outputs, and engage both internal and external stakeholders across the European Open Science landscape. The RDA TIGER project was established to support the development of high-impact, internationally aligned outputs by providing a suite of support services and grants to RDA Working Groups, with a particular focus on those contributing to the European Open Science Cloud (EOSC). WP2 played a central role in this effort by designing and delivering a service communications offering tailored to the lifecycle of each WG, from initial idea dissemination and internal coordination, to output promotion and adoption-focused outreach. Building on the planning and frameworks established in Deliverables D2.1 Communication Toolkit, D2.2 Updated Plan for Dissemination and Exploitation, and D2.3 European Network Engagement Progress, this final report presents an integrated view of WP2 implementation. It documents how the communications service matured from its pilot phase into a responsive, high-impact component of the RDA TIGER support platform, working closely with the supported WGs across each lifecycle stage. It highlights the collaboration with the facilitation and landscape services as well as the RDA Knowledge Base (KB) development team, and presents how the service strategically showcased the importance and impact of the project as a whole to the broader research data community. WP2 activities enabled increased visibility of RDA TIGER WGs across Europe, strengthened engagement with RDA Regions and European infrastructures, and supported the dissemination and adoption of WG outputs through events, webinars, targeted communications, and cross-project synergies. This deliverable also reports on metrics and analytics to showcase the impact of communication activities, and reflects on key lessons learned. It highlights the importance of embedding communications into WG workflows from the start, and the value of tailoring support to co-chair experience levels and specific requirements. As RDA TIGER concludes, the communication service leaves behind a portfolio of reusable resources, a strengthened presence for RDA WGs and their Outputs within the European Open Science landscape, and a set of good practices that can inform both the RDA’s future operations and similar initiatives aiming to connect global standards with European priorities.

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