So, what are doorway pages? Doorway pages are pages that are designed specifically for ranking benefits. They consider search engines, but not users.
So there are a number of types of doorway pages. Two commonly seen are cloaking and redirection pages. These are pages designed for search engines to see, but users don’t see these pages. If you click on one of these pages in the SERPs, you’re instantly redirected to a more useful page.