This book maps how sustainable finance operates across instruments, institutions, and sectors. The volume integrates four perspectives: capital markets, risk measurement and management, healthcare as an investment field, and a digital-institutional toolbox. It connects instruments, metrics, incentives, and impacts and foregrounds interoperability of metrics, portfolio construction implications (i.e. greenium and downside risk), and the design of outcome-based models in health and culture, positioning sustainable finance as a dynamic field linking market practice to societal goals. The book will be of interest to scholars, students, regulators, and practitioners in sustainable finance, ESG integration, climate risk, banking, and impact investing, offering sector-specific analyses that show how governance, data, and technology shape outcomes.

Mario La Torre is Full Professor of Banking and Finance at Sapienza University of Rome and series editor of the Palgrave Studies in Impact Finance series. His research spans banking, sustainable and impact finance, microfinance, and financing for culture and the audiovisual sector. He also leads the Center for Positive Finance and authors the "Good in Finance" blog. He has held several institutional roles and board positions in the financial and cultural sectors.

Sabrina Leo is Associate Professor at Sapienza University of Rome. Her work covers digital banking, distributed ledger technology, digital payments, IT governance, microfinance, and sustainable/impact banking with publications on ESG integration and financial innovation. She serves on editorial and scientific boards. Her teaching covers bank strategy and performance, digital banking, and the economics of financial intermediaries.

Fabiola I. Schneider is Assistant Professor (Ad Astra Fellow) in Accountancy at University College Dublin. Her research addresses sustainable finance, climate transition, fossil-fuel financing, and sustainability reporting. She has served on ESMA's Sustainability Standing Committee, the Greenhouse Gas Protocol Scope 3 Technical Working Group, and as Sherpa to the European Commission's Platform on Sustainable Finance. She co-leads GreenWatch, applying AI to detect greenwashing.