The COVID-19 pandemic led to the widespread adoption of distance and online learning in higher education, which has presented opportunities for large-scale, inclusive, flexible, and engaging learning. This volume, assembled by the University of London's Centre for Online and Distance Education, addresses the practice and theory of online and distance education, building on knowledge and expertise developed in the university across nearly a century and a half. Contributors explore important principles and highlight successful practices in areas such as course design and pedagogy, online assessment, open education, inclusive practice, and enabling students' voices. Case studies illustrate prominent issues and approaches. Together, the chapters offer current and future leaders and practitioners a practical, productive, practice- and theory-informed account of the present and likely future state of online and distance higher education worldwide.