This paper aims to investigate the role of digital platforms in improving knowledge sharing and the effectiveness of waste recycling by co-creating value. In order to do so, this research undertakes a single qualitative case study focusing on Alpha, a small-sized digital platform provider that operates in the highly fragmented Italian market of waste management. The case analysis relies on the Resource Interaction Approach as main analytical framework since it provides a practical tool – the 4R model – to classify resources involved and value outcomes emerging from their integration. Findings show how the digital platform fosters recycling practices engaging citizens, municipalities, and waste management companies in a shared co-production program. They support the literature on digital platforms serving value co-creation processes. The platform acts as a circularity broker between various stakeholders with complementary goals having a different impact on the process and outcomes of value co-creation.