Amazon's Digital Text Platform™, or DTP, is a conversion tool used to create content for the Kindle™ ebook reader device, and put that content up for sale in the Amazon Kindle™ Store. You cannot use the DTP to create Kindle™ editions of your work for your own personal use, the content creation process automatically generates an accompanying Amazon product page.
Assuming you've already made the decision to self-publish, there are three very good reasons to go with Amazon DTP: it's easy, it's free, and it gets your work onto the virtual shelves at Amazon in a matter of days. While it's true that only Kindle™ owners will be able to buy your DTP book, and they are a relatively small group as compared to the book-buying general public, these are the very circumstances that offer some distinct advantages over other forms of self-publishing.

