Dead Link
What is a Dead link?
Dead links, also known as broken links, direct to an inaccessible page. If such pages are not available, the reason behind it may be that linked pages have gone through changes like deletion, renaming, or moving. Other situations may arise where dead links may arise due to the deletion of web pages, or the server of a page may also have gotten into trouble.
They are essentially used for SEO, as dead links can cause errors in a website’s crawling and indexing. The general idea is that the more dead links, the lower a web page or website’s ranking will be. To avoid seeing 404 error on your web page, it is suggested to maintain a good internal linking structure without dead links.