Nearly every company today understands that sustainability must be made core to its strategy and capital allocation process but are often confused by how best to report on ESG progress in a way that will be credible to shareholders and other stakeholders. What is needed is a uniform set of standards for measurement and reporting — just as we have for financial performance. Imagine a world where each company had to decide for itself how to measure say, revenues, or depreciate its assets. Or to pick amongst three or four alternative ways of doing so suggested by  NGOs. That is the situation companies have been living in when it comes to ESG — but there is hope on the horizon.