Not necessarily, but a blog is really the best promotional tool. With that said, you can always use methods such as PPC or advertising to promote a product. This is more like hit-and-run affiliate marketing, however. The best way to make the most out of your affiliate marketing opportunities is to have a blog and use it for hard and soft promotion. Learn how to start a blog here.
Very well descriptive article. I would like to add a few points as well regarding page insights and Landing page optimization. With increasing voice searches across the globe, it’s really important to have an amazing loading speed. I am living in Toledo and working as a digital marketing freelancer and researched that page insights have a very deep insight into rankings. This article is really going to help many digital marketers just like me. Cheers!!