Digital platforms are established in business ecosystems with primarily non-tangible value creation (e.g., social networks, entertainment, software). All partners of a platform usually benefit from network effects. The digitization of physical products and processes drives the industrial platformization, so that manufacturing companies increasingly establish digital manufacturing platforms. Additive Manufacturing (AM) seems to be a highly promising technology for such emerging production platforms. Yet, it has to be proven that digital manufacturing platforms could play a major role in manufacturing industry. The present study examinates the relation between platform providers and related platforms in the AM field. A literature review and a subsequent cluster analysis of AM platforms are the two pillars of our research design to identify five patterns of platform-based value creation in digital manufacturing. The discussion of the resulting value creation patterns highlights implications for platform business model design by manufacturing companies and knowledge on digital platforms.