This document discusses sustainable procurement and its relationship to sustainability. It defines sustainable procurement as procurement that has the most positive environmental, social, economic and cultural impacts over the entire lifecycle. It affects procurement departments internally and customers, suppliers, local communities and society externally. Implementing sustainable procurement brings internal and external effects, raises business ethics issues and can have financial impacts. The document argues that the path of sustainable procurement should not fragment into many individual versions but instead focus on standardization, compliance, stakeholder engagement and measurement to drive change towards greater sustainability.