Service systems challenge traditional on-premise installations and create opportunities for new business models in the ERP market. In this paper, six case studies are analyzed to identify attributes and patterns of service oriented business models for Enterprise Resource Planning. The business models are analyzed with a focus on value proposition. Two patterns of service oriented business models for ERP are identified: holistic and niche. In addition to analyze business model patterns, we identified and applied categorizations of elementary offering types, ERPII layers and generic value proposition types. Hereby, the applied business model framework is enriched to broaden understanding of service oriented business models for ERP.