This document discusses digital textbooks. It defines a digital textbook as an e-book intended for use in a class. It lists advantages like lower costs, easier monitoring of student progress, and access to multimedia content. Disadvantages include the transition costs, student preferences for print, and issues of device access and digital literacy. The document also provides details about popular digital publishing platforms and the process of producing an interactive e-book, including editorial analysis, digital development, and quality assurance testing.