Multimedia can be defined as a form of communication that employs different content forms such as text, images, animations, audio, or video into a single presentation. Video podcasts, audio slideshows, animated shows, and movies are some of the popular examples of multimedia. It can be recorded for playback on computers, smartphones, laptops, and other electronic devices, either on-demand or for live streaming. There are several applications of multimedia in the 21st century such as in creative industries, commercial purposes, entertainment, educational technology, social work, language communication, journalism, engineering, mathematical and scientific research, medicine, virtual reality, and augmented reality. This book brings forth some of the most innovative concepts and elucidates the unexplored aspects of multimedia in the 21st century. Its aim is to present researches that have transformed this discipline and aided its advancement. This book will serve as a reference to a broad spectrum of readers.