Paperback is a service offered by Amazon's Kindle Direct Publishing (KDP) platform, which enables authors and publishers to create, format, upload, and sell print-on-demand paperback books on Amazon.com. Once the book is published, customers can purchase physical copies of the book, which are then printed, bound, and shipped out directly to the customer. Paperback books offer readers the opportunity to experience books in a completely different way - allowing them to actually hold the book in their hands and take a physical, tangible connection to the story within. For authors and publishers who opt to publish their books in paperbacks, this helps them to reach readers who prefer physical copies of books, and opens up a larger market for their titles.