Internal link – SEO WIKI
Internal links are hyperlinks that lead to other pages of the same site. Together they constitute a reference graph of the resource.
Internal links help to shape the weight of various pages of a site, for which transitions are set to the most significant materials or sections. Such manipulations are an important part of internal site optimization and are called internal linking.
Another goal of arranging internal links is to increase the convenience of navigation for the user, facilitate and accelerate access to any section or to any resource article. Competent internal linking is a factor that improves usability and increases the confidence of search engines.