If your link building plan begins and ends with cold outreach emails, you’re leaving the most valuable backlinks on the table. Search engines and AI systems no longer reward volume alone — they reward context. A handful of well-placed mentions from respected sites can now outweigh dozens of low-effort links, and understanding that distinction is what separates a link building strategy that quietly stalls from one that keeps compounding.
This guide breaks down what actually influences a backlink’s worth, which tactics genuinely move the needle, and how to build a plan that works for both traditional search rankings and AI-generated answers.
There are two very different types of link building
Most businesses only ever build one kind of link. The first type — call it the “quick win” category — includes tactics like outreach, directory listings, and broken link building. These are accessible, scalable, and a sensible starting point for a new site, but they rarely earn coverage from the sites that carry real weight in your industry.
The second type is slower and more demanding: digital PR, guest contributions, original research, and partnerships. These don’t just hand you a link — they place your brand name next to other trusted names in your niche, which is exactly the kind of signal AI tools and search engines use when working out who deserves to be recommended. A link building programme that only leans on the first category will plateau. One that blends both tends to keep climbing.
Why backlinks still matter for search — and now for AI too
A backlink has always worked as a kind of vote of confidence. When a credible site links to yours, it tells Google that other trustworthy publishers vouch for your content, which supports your standing in the search results.
What’s changed is that AI-driven answer engines are increasingly pulling from the same underlying web index that search engines crawl. There’s no confirmed “backlink algorithm” inside tools like ChatGPT or Gemini, but research from Semrush and Kevin Indig found a clear correlation between link quality and how often a brand gets cited in AI-generated responses. In other words, the authority you build through links doesn’t just help you rank — it helps you get mentioned.
It’s also worth remembering that unlinked brand mentions still carry weight. If a respected publication name-checks your business without hyperlinking it, that reference can still shape how search engines and AI tools understand your relevance to a topic.
What actually determines a backlink’s value
Not every link is worth chasing, and some are actively harmful. Here’s what separates a link worth pursuing from one that’s a waste of your time.
Authority of the linking site
A link from an established, well-trafficked website will typically do more for your visibility than one from a domain nobody’s heard of. Sites with genuine authority tend to share a few traits: a broad, natural base of sites linking to them, decent organic traffic, a clear subject focus, and content that’s actually well made. You can get a rough read on this using a metric such as Ahrefs’ Domain Rating or Semrush’s Authority Score, both of which estimate a site’s overall backlink strength on a 100-point scale.
That said, a healthy backlink profile isn’t made up entirely of high-authority links. A mix of smaller, relevant sites alongside a few strong ones tends to look far more natural than an all-or-nothing profile — and natural is what you’re aiming for.
Topical relevance
Context matters as much as authority. A link from a site that covers your exact niche, sitting inside a paragraph that’s actually about your product or service, is worth considerably more than a link buried in an unrelated article. If you sell hiking boots, a mention inside a proper buyer’s guide about outdoor footwear will do far more for you than a passing reference on a gardening blog.
Where the link sits, and what the anchor text says
Position on the page counts too. A link embedded early in the main body content tends to carry more weight than one tucked away in a footer or sidebar — largely because it’s more likely to actually be seen and clicked. The anchor text matters as well: descriptive, natural phrasing (like “walking boots for wet weather” rather than “click here”) helps both readers and search engines understand what they’ll find on the other end.
Nofollow tags aren’t the dealbreaker they used to be
You’ll often come across links with a rel="nofollow" attribute, which historically told search engines not to pass ranking credit through that link. Google now treats nofollow, sponsored, and UGC tags as hints rather than strict rules, meaning they may still factor into rankings. More interestingly, the same Semrush study mentioned above found nofollow links had almost the same impact on AI visibility as standard followed links — which suggests placement and context now matter more than the tag itself.
Co-citations and co-occurrence
When your brand appears in the same article as established names in your space, that’s a co-citation — and it helps search engines and AI tools understand which category you belong to and who your real competitors are. Similarly, if content about you consistently uses the same related terms (say, “waterproof,” “breathable,” and “trail-ready” for a boot brand), that pattern of co-occurring language reinforces what your business is actually about. Both tend to build naturally once you’re earning links from genuinely relevant sources.
Ten link building tactics worth your time
Run genuine outreach, not mass cold email
Reaching out cold to site owners can work, but response rates improve dramatically once there’s some relationship in place first — commenting on their work, sharing it, or referencing it in your own content before you ever ask for anything. When you do pitch, be specific about which page deserves the link and why it genuinely helps their audience.
Reclaim the links you’ve already lost
Pages get deleted, moved, or edited, and the backlinks pointing to them often break as a result. Tools such as Ahrefs’ Site Explorer or a backlink audit tool can surface these lost links quickly. If the linking page is still live and relevant, a short email asking the site owner to restore or update the link is often all it takes.
Study where your competitors get linked
Competitor backlink analysis won’t hand you identical opportunities, but it reveals which types of content and which sites are already open to linking to businesses like yours. Look for patterns — recurring formats, shared topics, or domains that link to several of your rivals at once — as those are your strongest prospects.
Get featured on curated resource pages
Resource pages that round up useful links within a niche are still an efficient way to pick up relevant, contextual backlinks. Search operators like [topic] + "useful links" or [topic] + inurl:resources will surface them. Pitch your best, most useful piece of content rather than a product page.
Fix broken links with your own content
Broken link building means finding dead pages that other sites still link to, then offering your own content as a suitable replacement. It solves a real problem for the site owner, which makes it one of the easier tactics to get a “yes” on.
Build something worth linking to
Original tools, calculators, in-depth guides, and well-designed data visuals tend to earn links passively, long after publication, because they give other writers something concrete to reference. This is genuinely one of the highest-return tactics available, even though it takes more upfront effort than most others.
Invest in digital PR
Securing coverage in trade publications or news outlets through an original data story, survey, or timely angle can generate links from sites you’d struggle to reach any other way — and the resulting coverage often gets pulled into AI-generated summaries too.
Make yourself available as a source
Platforms such as Featured connect journalists with expert sources, and searching hashtags like #JournoRequest on X can surface similar opportunities. A well-placed quote in a credible article builds association even when there’s no link attached.
Contribute guest content to relevant publications
Guest posting still works when the pitch is specific and the angle hasn’t already been covered on that site. Look at where competitors have contributed and pitch something genuinely different rather than duplicating their approach.
Tap into existing partnerships
Suppliers, resellers, and industry bodies you already work with often have partner or resource pages. These links may not pass huge ranking weight on their own, but they reinforce the co-citation signals that tell search engines and AI tools exactly which category you operate in.
Keeping track of your progress
Link building isn’t a one-off project — it needs regular auditing to catch new links, lost links, and anything potentially harmful pointing at your site. Running scheduled backlink audits and keeping an eye on your overall authority score over time gives you a much clearer picture of whether your strategy is actually working, rather than relying on guesswork.
Ultimately, the strongest link building strategies combine the fast, scalable tactics that build volume with the slower, relationship-driven ones that build genuine authority. Lean on both, and you’ll be building visibility that holds up in Google’s results and in whatever AI tools serve up next.
