There are several motivations for a company to pursue sustainability. Among these, the fulfilment of legal requirements is the strongest driver, but societal pressure and sustainability as a marketing tool can also be important incentives. This chapter focuses on aspects that are relevant for companies building sustainable bio-based value chains. The role of life-cycle assessment (LCA) is described, particularly in relation to GHG accounting. Sustainability standards and certification systems, such as the Roundtable on Sustainable Biomaterials (RSB), and supply chain traceability models are also presented. Finally, the new EU due diligence obligations are discussed.