Links are how Google and other search engines assign credibility. It's been true since the inception of Google — it's what set Google apart from its competitors in the early days of search. Links and their role in the algorithm have evolved, but the basic building blocks of links and authority still have a massive influence on search, and AI-generated answers are now looking for similar signals.
When a high-authority, relevant website links to your domain, it signals to Google and AI search tools that you're a trustworthy source worth sending people to. That signal hasn't lost its power. If anything, it's become more important.
When AI tools synthesize search results and decide which brands to recommend, a strong, diverse backlink profile is the proof of authority that determines whether you show up or get left out.
But here's what most agencies won't tell you: a backlink profile built on one type of link is a fragile profile. Most sites are building one, maybe two types of links, and calling it a strategy. It's not. Real authority comes from building a variety of backlinks that reflect your actual competitive situation.
A complete, high-performing backlink profile includes six distinct types of links working together.