An internal link refers to links which do not point to an outside domain. For example, a link pointing from example.com/about.html to example.com/contact.html would be an internal link, whereas a link pointing from example.com/about.html to external-resource.com would be an external link.nnGood SEO calls for both. Internal links help to guide users and search bots around your site and helps them find the content they are interested in. External links are a valuable way to demonstrate to search engine bots how relevant and valuable your content is as well as a way to enrich your content for users.