This deliverable presents the progress made by the EOSC-SIESTA project in the areas of dissemination, communication, exploitation, and collaboration during the first 18months of its implementation. It serves as a follow-up and complement to the initial strategic plan defined in Deliverable D3.1, which outlined the objectives, tools, and audience segmentation that would guide the project's outreach and visibility efforts.While D3.1 was forward-looking in nature, this document adopts a results-oriented perspective, reporting on the activities that have actually taken place, analysing theireffectiveness, and reflecting on lessons learned.