Digital finance refers to the integration of big data, artificial intelligence (AI), mobile platforms, blockchain and the Internet of things (IoT) in the provision of financial services.

Sustainable finance, on the other hand, refers to financial services integrating environmental, social and governance (ESG) criteria into the business or investment decisions for the lasting benefit of both clients and society at large.

Combined, sustainable digital finance is increasingly demonstrating its ability to address barriers and promote sustainable economic growth.

https://www.weforum.org/agenda/2020/11/sustainable-digital-finance-low-carbon-economy/ to increase energy efficiency, reduce overall energy consumption or expand the use of renewable energies.