The U.S. book publishing industry is immense. In fact, according to the Association of American Publishers (AAP), the industry generated nearly $26 billion in 2019 alone. This represented an increase in revenue from the year before. As you might expect, all of the books being sold each year require a significant amount of editing. Every book published goes through multiple rounds of editing under the close scrutiny of various types of editors — including developmental, line and copy editors. The process starts at the office of an acquisitions editor. Types of jobs; Acquisition editor, development editor, fact-checking editor, line editor, copy editor, proofreader, and beta reader.