This volume builds on the previous report, the 2018 edition, by providing updated migration statistics at the global and regional levels as well as descriptive analysis of complex migration issues. Part I, on key data and information on migration and migrants, includes chapters on global migration trends and patterns, regional dimensions and developments and a discussion of recent contributions to migration research and analysis by both academia and organizations, including IOM. The chapters in Part II cover a range of complex and emerging migration issues including: migrants’ contributions to societies: migration, inclusion and social cohesion: migration and health: children and unsafe migration: migration and adaptation to environmental change: migrants caught in crises and recent developments in global migration governance.