What are doorway pages?
Doorway pages are defined as low-quality pages (or groups of pages, or entire websites) optimized to rank well for specific keywords that act as a door between users and content. Characteristically, they offer little value to visitors and serve the sole purpose of boosting SEO value.
Doorway pages are web pages that are created for the deliberate manipulation of search engine indexes.
Doorways are sites or pages created to rank highly for specific search queries.