In the financial sector, digital transformation and sustainability must be viewed in an integrative manner. But how can this requirement be put into concrete terms and what key challenges will we face in the financially-oriented corporate world in the future as a result of the combination of digital transformation, sustainability and financial markets? The international congress “Digital Transformation and Sustainability in Global Financial Economics” held at Andrassy University Budapest (AUB) on 27 September 2021 addressed these challenges and provided interesting insights into current international research projects on the topics of digitalisation, digital transformation, sustainability, financial markets, blockchain, environment, social, governance (ESG) and green technologies.