About Kindle Direct Publishing (KDP)
If you want to sell your book for Kindle via Amazon.com, this is the place to go.
The KDP site handles everything from guiding you through formatting your ebook for the Kindle (and for Kindle apps on other devices), to uploading it to the site, all the way through to helping you track sales as you go.
Initial review for ebooks in English takes about a day. But then, any changes you make after your book is live in the Kindle store — whether to the pricing, description or the book itself — have to be approved before going live, which may take up to 24 hours.
Through this single service, you can make your ebook available to readers US, Canada, UK, Germany, India, France, Italy, Spain, Japan, Brazil and other countries.