“…For the further course of this paper, we refer to public procurement as acquisition of goods and services by government of public sector organizations (Uyarra and Flanagan, 2010). At the same time we acknowledge the different factettes in the theoretical field (Brammer and Walker, 2011;Gelderman et al, 2015;Preuss, 2009) and understand within this definition public procurement as a broad field, involving more than the procurement process, but also its potential as a policy tool, its importance for government efficiency, its impacts on innovation and development, as well as the strategic implications it brings along (Flynn and Davis, 2014;Koala and Steinfeld, 2018;Patrucco et al, 2017;Thai, 2008). Adding sustainability to public procurement, we understand public procurement as sustainable when it enfolds the economic, environmental and social dimensions in all public purchases (Brammer and Walker, 2011;Knebel et al, 2019;McCrudden, 2004).…”