Digital transformation is a critical component for steel companies' future success. It is a broad concept with the potential to influence all aspects of the steelmaking process. This year's Digital Transformation Forum dives into the specific topics of machine learning (ML) and artificial intelligence (AI). Machine learning and artificial intelligence technology is the heart of nearly every application of Industry 4.0. The 2021 Digital Transformation Forum covers ML/AI applications and use cases from liquid steel (iron- and steelmaking), upstream (casting and hot rolling) and downstream process, to final product. In addition, the Digital Transformation Forum will discuss the essential roles humans play in a successful digital transformation journey. Strategies and methods to efficiently manage the cultural change and human involvement are also explored through the high-quality presentations and panel discussion sessions.