Finance is waking up to the need and opportunity to understand and act on sustainability challenges. Doing so is highly complex due to the systemic nature of the issues, data availability and the multiple trade-offs that firms face. Yet, technological developments are enabling those changes increasingly rapidly, governments are taking action in response to the Paris agreement and numerous initiatives are driving cultural change, including Michael Bloomberg’s Taskforce for Climate related Financial Disclosures (TCFD). Business must respond now to stay relevant.