This paper investigates how digital infrastructures, guided by growth tactics, can support trans-situated learning within networks of practice, promoting transparency, collaboration, and knowledge sharing across organizational boundaries. Using a design science research (DSR) approach, we developed and evaluated “SISA News,” an information infrastructure for the Swedish Information Systems (IS) research community. The system aggregates news from 18 IS departments via RSS feeds, social media, and digital signage, facilitating cross-departmental engagement and vicarious learning. The evaluation, based on the FEDS framework [22], includes proof-of-concept, proof-of-use, and proof-of-value stages [13], combining technical tests, social network analysis, and user feedback. Results demonstrate the infrastructure’s effectiveness in enhancing transparency, enabling legitimate peripheral participation, and fostering knowledge exchange. Key challenges include achieving critical mass and maintaining content relevance across diverse stakeholders. This study contributes to theory by advancing understanding of trans-situated learning and the role of growth tactics—such as adding services and providing interfaces—in the scalability and adaptability of digital infrastructures. It also highlights the mutual interplay between social learning processes and platform design. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.