The endeavour towards developing QA systems through various stages of testing and development is in response to the growing public concern for the quality of DE as well as staff aspirations for quality. This book, through the selection of cases from the aforementioned institutions, covers a wide range of QA systems and perspectives of quality in DE. These cases present good practices in QA for DE/e-learning, analyse challenges in assuring the quality of DE products and services, offer possible solutions to meet those challenges, and present lessons for other DE providers.