Kindle Direct Publishing (KDP) is an Amazon self-publishing service. You can publish your books in digital and print for free and sell on Amazon to millions of readers. You can earn up to 70% royalty on Kindle eBook and 60% on paperback sales.
I used the CreateSpace platform to publish All the Safe Places: An Australian child’s war before CreateSpace combined with Kindle Direct Publishing. This no longer an option. I was able to order proof copies and author copies at cost, and I’m very happy with the quality.
Amazon says “CreateSpace is combining with Kindle Direct publishing (KDP), making KDP the single place to publish your print and digital books” and “KDP's print on demand service allows you to self-publish your book in paperback and sell it on Amazon websites in the US, Europe, and Japan, as well as other retail book sellers through KDP's Expanded Distribution channels. You don't have to pay any costs upfront or carry any inventory. Your book is printed on demand when customers purchase it.”