Amazon KDP, or Kindle Direct Publishing, is a platform that allows authors and publishers to self-publish their books in digital and print formats. It provides an easy way for writers to reach a global audience without the need for traditional publishing houses. Users can upload their manuscripts, set their prices, and manage their sales directly through the platform. With Amazon KDP, authors earn royalties on their sales, which can be as high as 70% for eBooks. The service also offers tools for formatting, cover design, and marketing, making it accessible for both new and experienced writers to publish their work efficiently.