This deliverable presents the strategy and material developed by PrismArch partners towards the establishment of an ecosystem around the project, which will attract and involve third-party contributors, aiming to accelerate the adoption and broaden the scope of high-quality services in the PrismArch platform. The report details the ecosystem development strategy, offers an overview of the communication material to be employed, and describes the activities that will be taken towards building the ecosystem. These activities include: a) online engaging, educational activities such as freely available online material and thematic webinars elaborating on the scientific background or the PrismArch modules, and b) physical events, such as networking and themed events. The target audiences of these activities include AEC industry, key stakeholders, scientists, general public but also student groups and networks, freelancers, AEC communities and more. Work during the second period of the project will focus on the implementation of the ecosystem-building strategy described in this deliverable.