This Open Access new edition of the EBMT handbook with its new format, addresses the latest developments and innovations in hematopoietic cell transplantation and cellular therapy. Consisting of 94 chapters, it has been written by 210 leading experts in the field. Discussing all types of hematopoietic cell transplantation, including selection of stem cell sources, it also covers the indications for transplantation, the management of early and late complications as well as the new and rapidly evolving field of cellular therapies and new infections (COVID-19). This book provides an unparalleled description of current practices to enhance readers’ knowledge and practice skills.