The world's systems of higher education (HE) are caught up in the fourth industrial revolution of the twenty-first century. Driven by increased globalization, demographic expansion in demand for education, new information and communications technology, and changing cost structures influencing societal expectations and control, higher education systems across the globe are adapting to the pressures of this new industrial environment. To make sense of the complex changes in the practices and structures of higher education, this Handbook sets out a theoretical framework to explain what higher education systems are, how they may be compared over time, and why comparisons are important in terms of societal progress in an increasingly interconnected world. Drawing on insights from over 40 leading international scholars and practitioners, the chapters examine the main challenges facing institutions of higher education, how they should be managed in changing conditions, and the societal implications of different approaches to change. Structured around the premise that higher education plays a significant role in ensuring that a society achieves the capacity to adjust itself to change, while at the same time remaining cohesive as a social system, this Handbook explores how current internal and external forces disturb this balance, and how institutions of higher education could, and might, respond.