Sustainability and ESG—key principles Corporate sustainability, or performance in respect of ‘environmental social governance’ (ESG) criteria, has become increasingly important to investors, customers and employees in recent years. In response to this, there has been a rapid development of ESG criteria (also referred to as ESG metrics or factors) against which the performance of a, usually corporate, entity can be evaluated. Common ESG metrics or factors The overarching goal of the mandatory and voluntary ESG reporting frameworks developing in the EU and globally is to collect measurable data to show whether corporate entities are truly ‘sustainable’ in respect of each ESG metric relevant to their business and to make that data as transparent as possible for investors and other stakeholders. For more information on the development of the principles of ESG, and their practical application, see Practice Notes: • ESG—new starter guide • Sustainable business and environmental, social, governance (ESG)—introduction for companies and advisors For a hub on issues related to sustainable business, including reporting, see: ESG and sustainability collection. EU mandatory corporate sustainability