Whenever you’re satisfied with the look of the eBook, you can publish it. This doesn't publish your eBook to Kindle Immediate Publishing, but creates the .kpf file and you will add that file to Kindle Immediate Publishing, in place of your Term file. Strictly speaking, no. Amazon doesn’t demand you https://maplepublishers.com/blog/how-to-start-your-career-as-a-fiction-writer-by-self-publishing-a-book/