When you’re content with the search of your respective eBook, you can publish it. This doesn't publish your eBook to Kindle Immediate Publishing, but generates the .kpf file and you can upload that file to Kindle Immediate Publishing, rather than your Word file. In case you created your .kpf file https://maplepublishers.com/blog/what-formats-you-must-think-about-while-self-publishing-a-book/