Educational technology refers to tools and media, such as computer-based training and online learning, which aid in the communication of knowledge and facilitate learning processes. It encompasses a wide range of software and hardware components designed to enhance teaching and learning experiences. It incorporates theoretical foundations that underpin learning and teaching methodologies. Technology-enhanced learning, instructional technology, e-learning, multimedia learning, and learning technology are some of the various fields under this domain. This emerging field of science has experienced rapid advancements over the past few decades. This book provides comprehensive insights into the field of educational technology. The topics covered in this extensive book deal with the core aspects of this field. Coherent flow of topics, student-friendly language and extensive use of examples make this textbook an invaluable source of knowledge in the field of educational technology.