For decades, self-publishing was derided as an embarrassing sign that an author couldn’t cut it in the “real” publishing industry—“the literary world’s version of masturbation,” as Salon once put it. And Amazon, the world’s biggest e-commerce site, with its bookstore-beating prices, was painted as an enemy to authors. But now its self-publishing service, Kindle Direct Publishing (KDP), has made it easy for people to upload their books, send them out into the universe, and make money doing so. Its store has created a place for readers to go and easily find inexpensive self-published books. The site that got its start by radically changing where books are sold is now reshaping how books are published and read.