The link building strategy in which you look for high-quality, authoritative pages that have links pointing to pages that no longer exist, and let them know that you’ve got a brand new page with a piece of content that answers the same question or need is called ______.

Broken link building is a highly effective SEO strategy where you identify broken links (404 errors) on authoritative websites. You then create or find relevant, high-quality content on your own site that could replace the missing content. Finally, you reach out to the website owner, inform them of the broken link, and suggest your content as a suitable replacement. This benefits both parties: the website owner fixes a broken link, and you gain a valuable backlink. "Building links based on content" is a general approach, not a specific strategy. "Unlinked mentions" involves finding instances where your brand or content is mentioned online without a hyperlink and then requesting a link.