The demand for educational technologies has been rising steadily; e-learning is a huge and expanding worldwide industry. Commercial e-learning companies, training departments in large companies and organizations, computer software companies, and educational institutions over the world employ large numbers of specialists in various aspects of educational technology creation (programming, graphic design, instructional design, task analysis, usability engineering, subject matter analysis, editing, etc.). This book is targeted toward readers who are interested in educational technology and would like to understand educational technology from different perspectives. Keeping in mind the varied needs of the organizations, employees, and potential students, this book adopts a competency-based approach to learning and assessment. The themes and topics take a multi-disciplinary approach and are aimed at preparing students for competent and innovative educational technology professionals.