When looking for the best niches for Amazon KDP, it's important to research popular and profitable categories on Amazon. This will give you an idea of what types of products are in demand and selling well on the platform. You can then look for niches within those categories that are not overly saturated with competitors. This can help you identify areas where there is a demand for products, but not a lot of competition.

Another way to find the best niches for Amazon KDP is to look for gaps in the market. This means looking for areas where there is a demand for products, but no one is currently providing those products. If you can identify a gap in the market and create a product that meets that demand, you may be able to gain a competitive advantage and be successful on Amazon.

Keyword research is also an important part of finding the best niches for Amazon KDP. By using keyword research tools, you can identify popular and profitable keywords that you can use to optimize your book's title and description. This can help make your book more visible to potential customers on Amazon and increase your chances of success.

Overall, the best niches for Amazon KDP are those that are in demand, profitable, and not overly saturated with competitors. By researching popular categories, looking for gaps in the market, and using keyword research tools, you can identify and target these niches and increase your chances of success on Amazon.