This first volume presents a rigorous exploration of the latest advancements in engineering, specifically focusing on the foundational role of digital transformation in a connected world. It investigates how emerging technologies ranging from intelligent network architectures to advanced digital systems serve as the catalyst for modern industrial evolution. The collection delves into the transformative power of environmental innovation, examining the technical frameworks necessary to navigate global disruptions and economic uncertainty. Focusing on digital transformation, Artificial Intelligence, and smart systems in engineering presents the most advanced integrations of digital technologies with engineering and management processes. A significant part of the work concerned the transformation of the banking and finance sector – both in the context of the role of digital banks in improving service quality and financial inclusion, and the impact of the digital transformation of banks on their financial performance compared to traditional banks. Another important part presents sustainable systems and environmental innovation,  focusing on a multidimensional approach to sustainable development—from consumer perceptions and pro-environmental behaviors, through ESG management in industry, to specific engineering and policy solutions. Extended engineering and technical approach is visible in the section based on the implementation of new materials and mechanical processes for sustainable engineering, as well as skillful quality management and the open and digital innovations.