“Online” means the content may only be read while the reader is connected to the Internet. Thus the reader’s experience with an online book is similar to reading a printed book, except that the book is read at a computer and is only accessible while the reader is online.
Online books are a common resource in virtual learning environments (VLEs). For example, the Moodle VLE defines an online book in this way. Over the last few years, there has been an increase of online books that are being used for notable events or to commemorate the memory of someone. The fundraising industry often uses online books as a way to fundraise, as online books are also a way to collect donations and engage with their audience.