Backlinks have been part of SEO since Google’s earliest days. For years, the advice was simple: get more links from better websites and you will rank higher. Then AI Overviews, ChatGPT, Perplexity, and Gemini started answering questions instead of just listing pages. That raised a fair question: if search engines now summarize the web instead of sending people to it, do backlinks still matter?
The short answer is yes — but not in the same way they used to. Backlinks remain one of the strongest signals for traditional Google rankings. For AI search, they still help, but being named across the web often matters more than being linked.
This guide explains what backlinks are, how they work, what has changed in 2026, and how to build a strategy that works for both classic search and AI answers.
What Are Backlinks?
A backlink is a hyperlink from one website to another. If a marketing blog links to your SEO guide, that link is a backlink to your site.
Search engines treat a good backlink as a vote of confidence. When a relevant, trusted site points to your page, it is saying: this resource is worth citing. Google’s original ranking system, PageRank, was built on that idea. The core mechanic has not disappeared. Sites that earn links from trustworthy, relevant sources still tend to outrank sites that do not.
Backlinks also do something simpler and often overlooked: they send people. A link on a high-traffic article can drive referral visits from readers who already care about the topic.
Types of Backlinks
Not every link works the same way.
Dofollow links are the default. They can pass ranking value, sometimes called link equity. These are the links most people mean when they talk about “link building.”
Nofollow links include a rel=”nofollow” attribute. Google has treated nofollow as a hint rather than a hard block since 2020, so they can still have some influence. They also appear naturally on social platforms, forums, comments, and press pages. A profile that is 100% dofollow can look unnatural. A mix is healthier.
Other useful distinctions:
- Editorial links appear inside content because the author chose to cite you.
- Resource links sit in guides, roundups, or “best tools” lists.
- Unlinked mentions name your brand without a hyperlink. They do not pass classic link equity, but they matter more than ever for AI visibility.
Quality still beats volume. One contextual link from a relevant industry publication is worth more than dozens of links from unrelated or low-quality sites.
Why Google Still Uses Backlinks
Google has never said links are dead. It has said that raw link counts matter less than they used to, and that spammy or paid links can hurt you.
In September 2026, a survey of 131 SEO professionals ranked relevance first among Google ranking factors (57.1%), backlinks second (54.8%), and content quality third (47.6%). Links from trusted, topically relevant pages with real visitors scored especially high. Spammy links ranked among the strongest negative signals. As Cyrus Shepard put it, “the rumor of the death of backlinks has been greatly exaggerated.”
That matches older ranking studies: the number-one organic result has often had several times more backlinks than results in positions two through ten. Correlation is not proof of cause, but the pattern has been consistent for years.
Backlinks also support E-E-A-T — experience, expertise, authoritativeness, and trustworthiness. A citation from a respected site is third-party proof that your content is credible. Google’s systems still use that kind of proof when they decide which pages deserve to rank.
What has changed is enforcement. Private blog networks, guest-post factories, and bulk directory links are easier for Google to discount or penalize. The links that still work look like recommendations, not inventory.
Do Backlinks Still Matter for AI Search?
This is where the strategy splits.
AI systems such as Google AI Overviews, ChatGPT, Perplexity, and Gemini do not rank ten blue links the way classic search does. They look for sources they can trust and entities they recognize. A backlink can be one trust input. It is rarely the main one.
Ahrefs’ analysis of 75,000 brands found that branded web mentions correlated with AI citation rates at about 0.66 — roughly three times stronger than raw backlinks, which sat around 0.22. Mentions on highly linked pages showed an even stronger relationship with AI Overview visibility in other research.
Another 2026 dataset found that 72.8% of AI-cited pages had zero page-level referring domains. That does not mean authority is irrelevant. It means a page does not need its own pile of backlinks to be cited. The domain’s reputation, the brand’s mention footprint, and the usefulness of the page matter more at the moment of citation.
So the honest model for 2026 looks like this:
- Classic Google rankings: backlinks still matter a lot, especially relevant links from trusted sites.
- AI answers: mentions, citations, and entity recognition matter more than link count.
- The overlap: a strong link from a trusted publication can do both. It can help you rank and put your name into the corpus AI systems read. One practitioner reported a Reuters mention and link followed by a sharp jump in ChatGPT visibility. That is one case, not a law, but it matches what many teams now see.
Backlinks did not become useless in AI search. They became indirect. They help pages rise. Rising pages get cited. Cited pages mention brands. Those mentions feed the next round of AI answers.
What Makes a Backlink Valuable Now
Four things decide whether a link is worth pursuing.
Relevance. A link from a page about the same topic passes more meaning than a link from an unrelated site. A cybersecurity blog linking to an incident-response guide is useful. A recipe site linking to that same guide is mostly noise.
Authority and traffic. Links from pages people actually read beat links from empty sites with inflated metrics. “A hundred links from real audiences beat a thousand links nobody ever clicks.”
Placement and context. An in-content citation next to a specific claim is stronger than a buried footer or author-bio link.
Anchor text. Natural phrasing is safer and more useful than exact-match keyword stuffing. “According to a 2026 study by [Brand]” is better than “best cheap SEO tool” repeated across dozens of sites.
If a link would look odd to a human editor, it will eventually look odd to Google.
How to Earn Links and Mentions That Still Work
The tactics that survive are the ones that create something other people want to cite.
Publish citable work. Original research, surveys, proprietary data, benchmarks, and clear frameworks attract both links and unlinked mentions. AI systems and journalists look for specific numbers and named sources. Generic “ultimate guides” rarely get either.
Do digital PR, not mass guest posting. Pitch a finding, an expert take, or a useful dataset to journalists and niche publications. One durable editorial link plus a brand mention often beats twenty low-quality guest posts.
Reclaim unlinked mentions. Search for your brand, product, and authors. When a site already talks about you, ask for a link. Conversion is high because the endorsement already exists.
Fix broken links. Find dead resource links on relevant pages and suggest your content as the replacement. You are solving an editor’s problem, not begging for a favor.
Guest post only where the audience is real. If you do it, insist on a contextual link inside the article. Treat the byline link as a bonus, not the prize.
Build topical authority on your own site. Internal links, complete topic coverage, and pages that answer follow-up questions help both rankings and AI retrieval. Google’s public guidance on AI visibility still points back to helpful content, E-E-A-T, and normal SEO — not shortcuts.
Avoid the tactics Google has already caught: PBNs, guest-post networks, paid links dressed up as editorials, and scaled AI pages built only to collect links. Those are more likely to create risk than rankings.
A Practical Strategy for 2026
Think in two layers instead of one metric.
Layer 1: Rank in Google. Earn a smaller number of relevant, authoritative backlinks. Audit your profile for toxic or decaying links. Track referring domains and important losses, not just raw link count. Quality and trend matter more than a vanity total.
Layer 2: Get named in AI answers. Create facts, definitions, and research other sites will repeat. Measure branded mentions, citations in AI Overviews, and visibility in ChatGPT or Perplexity separately from organic rankings. A page can rank well and still be invisible to answer engines, or the reverse.
The winning assets do both: a study that journalists link to, analysts quote, and AI systems reuse. That is the modern version of link building. You are not collecting URLs. You are making your brand a source.
The Bottom Line
Backlinks still matter in the age of AI search. They remain a core off-page signal for Google rankings, and SEO practitioners still place them near the top of the ranking-factor list. What changed is the job description.
A backlink is no longer the whole authority strategy. It is one proof of trust. AI search looks at a wider set of proofs: how often you are named, who names you, whether your facts are reusable, and whether your brand is a recognizable entity in your category.
Keep earning good links. Stop chasing empty ones. Pair every linkable page with content that can be cited even when no hyperlink is attached. That combination is what still gets you found — by people, by Google, and by the AI tools they now ask first.
