The book primarily focuses on the process of industrial transformation in the era of digitalization. It meticulously discusses the processes, technologies, and business models that delineate modern industrial landscapes. A business maturity model is a tool used in organizations to assess how advanced their processes, systems, and procedures are. This model is utilized to identify areas that might require improvements, and then to measure progress in these improvements. The goal is to achieve "maturity", meaning the organization has well-defined, measurable, and repeatable processes. The first chapter traces the evolution of the manufacturing sector, emphasizing the shift toward digitalization and automation, while considering historical context and future trends. The second chapter examines business maturity models, reviewing current approaches and arguing for a broader perspective that includes environmental and social considerations. Chapter three introduces a research model for assessing the maturity of Polish manufacturing companies, detailing the methodology and research instruments used. The fourth chapter presents case studies from Polish industries (automotive, steel, and food), providing practical insights into the application of maturity models in real-world scenarios.