The involvement of stakeholders and the public in societal decision processes has lately received increased attention. We suggest that appropriate and tailored techniques should be selected and integrated to provide the prerequisites for inclusive involvement depending on the issue, type, goals and phase of the decision process in question, i.e. an analytic, systematic and dynamic approach to collaboration. In a transdisciplinary case study design we integrate diverse analytical methods whereby a process of mutual learning between science and people from outside academia is strived for. Our framework for collaboration is illustrated by a case study on sustainable landscape development in the Swiss prealpine region of Appenzell Ausserrhoden.Keywords Societal decision process Á Involvement of stakeholders and the public Á Collaboration Á Transdisciplinary case study design Á Sustainable development